# Mathematical Picture Language Seminar 2025-2026 2024-2025 2023-2024 2022-2023 Conference 2022 2021-2022 2019-2021 2018-2019 2017-2018 ## 2025-2026 The Math Picture Language seminar will be held at **3:00 p.m. Boston time in Jefferson 368**. Recorded seminars can be viewed on the [Mathemical Picture Language YouTube channel](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos). To subscribe to the seminar announcement mailing list, send an email with 'subscribe' in the subject line to: or sign up on this web page: [https://web.lists.fas.harvard.edu/mailman/lists/mathpicseminar.lists.fas...](https://web.lists.fas.harvard.edu/mailman/lists/mathpicseminar.lists.fas.harvard.edu/) **SCHEDULE** **Special Location: Jefferson 368** Thursday, October 23, 2025 **Yasuyuki Kawahigashi** , University of Tokyo/RIKEN [video](https://youtu.be/hS469FiAFFI) "[Tensor networks, fusion categories and operator algebras](/sites/g/files/omnuum6611/files/2025-10/25-10-23%20Yasuyuki%20Kawahigashi%20Seminar.pdf "Yasuyuki Kawahigashi NO ZOOM LINK POSTER (University of Tokyo/RIKEN): Tensor networks, fusion categories and operator algebras")" **\*Fully Remote\*** Tuesday, February 10, 2026 **Henrik Dreyer**, Quantinuum [slides](/sites/g/files/omnuum6611/files/2026-03/2026_02_10_PictureSeminar%20Henrik%20Dreyer.pdf "Henrik Dreyer Talk Slides 2.10.2026") [video](https://www.youtube.com/watch?v=7aVNFr5OJoU) "[Superconducting pairing correlations on a 98-qubit trapped-ion quantum computer](/sites/g/files/omnuum6611/files/2025-12/02-10-26%20Henrik%20Dreyer%20Seminar.pdf "Henrik Dreyer (Quantinuum): Superconducting pairing correlations on a 98-qubit trapped-ion quantum computer")" Tuesday, March 3, 2026 **Sasha Geim**, Harvard [slides](/sites/g/files/omnuum6611/files/2026-03/2026_03_03_MathPicture_noanimations.pdf "Sasha Geim Talk Slides 3.3.2026") [video](https://www.youtube.com/watch?v=EhIGpN-P0Nw) "[A fault-tolerant neutral-atom architecture for universal quantum computation](/sites/g/files/omnuum6611/files/2026-02/3.3.2026%20Sasha%20Geim%20Seminar.pdf "Sasha Geim (Harvard): A fault-tolerant neutral-atom architecture for universal quantum computation")" **\*New regular time and date\*** Wednesday, April 29, 2026 **Kaifeng Bu**, Ohio State University [video](https://www.youtube.com/watch?v=eHK5vAdWDGM) [slides](/sites/g/files/omnuum6611/files/2026-04/Kaifeng%20Bu%20Seminar%20Slide%20Deck%204.29.26.pdf "Kaifeng Bu Seminar Slide Deck 4.29.2026") "[Hamiltonian Decoded Quantum Interferometry for General Pauli Hamiltonians](/sites/g/files/omnuum6611/files/2026-04/4.29.2026%20Kaifeng%20Bu%20Seminar.pdf "Kaifeng Bu 4.29.2026 Seminar Flyer ")" Wednesday, May 6, 2026 **Michael Douglas**, Harvard University [video](https://www.youtube.com/watch?v=WVeNBpIyEO8) "[Formalization of QFT](/sites/g/files/omnuum6611/files/2026-04/5.6.2026%20Michael%20Douglas%20Seminar_0.pdf "Mike Douglas 5.6.2026 Seminar Flyer ")" Wednesday, May 13, 2026 **Peter Love**, Tufts University [video](https://www.youtube.com/watch?v=NHcaPl1jbKc) [slides](/sites/g/files/omnuum6611/files/2026-05/Peter%20Love%20Seminar%20Slide%20Deck%205.12.26.pdf "Peter Love 5.13.26 Seminar Slide Deck") "[Non-contextual approximations, Magic, and Correlation energy](/sites/g/files/omnuum6611/files/2026-05/5.13.2026%20Peter%20Love%20Seminar.pdf "Peter Love 5.13.2026 Seminar Flyer")" Wednesday, May 20, 2026 **Carter Gustin** Tufts University [slides](/sites/g/files/omnuum6611/files/2026-05/5.20.2026%20Carter%20Gustin%20Seminar%20Slide%20Deck.pdf "Carter Gustin (Tufts) 5.20.2026 Slide Deck") [video](https://www.youtube.com/watch?v=sMmyAEhy16Y) "[Quantum Simulation of Renormalized Quantum Field Theory Hamiltonians"](/sites/g/files/omnuum6611/files/2026-04/5.20.2026%20Carter%20Gustin%20Seminar_0.pdf "Carter Gustin (Tufts) 5.20.2026 Flyer") Friday, June 5, 2026 **Gian Michele Graf** ETH Zurich [video](https://www.youtube.com/watch?v=URBSIcPJPcI) [slides](/sites/g/files/omnuum6611/files/2026-06/Gian%20Michele%20Graf%20Seminar%20talk%20Slides%206.5.2026.pdf "Gian Michele Graf Talk Slides 6.5.2026") "[An elementary derivation of the periodic table of topological matter](/sites/g/files/omnuum6611/files/2026-05/6.05.2026%20Gian%20Michele%20Graf%20Seminar.pdf "Gian Michele Graf 6.5.2026")" ## 2024-2025 The Math Picture Language seminar will be held at **4:30 p.m. Boston time in Jefferson 256**. Attendees can also join the seminar remotely. The seminar will be held bi-weekly for the Spring 2025 semester. Click here for a [Zoom Link for Tuesday Math Picture Language Seminars](https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09). Recorded seminars can be viewed on the [Mathemical Picture Language YouTube channel](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos). To subscribe to the seminar announcement mailing list, send an email with 'subscribe' in the subject line to: or sign up on this web page: [https://web.lists.fas.harvard.edu/mailman/lists/mathpicseminar.lists.fas...](https://web.lists.fas.harvard.edu/mailman/lists/mathpicseminar.lists.fas.harvard.edu/) **SCHEDULE** **Special Time: 4:45pm** Tuesday, September 10, 2024 **Michael Freedman**, Harvard [video](https://www.youtube.com/watch?v=O6-9X5dxKYg) "[What can ML learn from the proof of the Kolmogorov-Arnold theorem](/file_url/1397)" Tuesday, September 24, 2024 **Yuanjie (Collin) Ren,** MIT [video](https://www.youtube.com/watch?v=z9fGKpseV9Q) [slides](/file_url/1401) "[Solving the problem of preparing solvable anyons with constant-depth adaptive quantum circuits](/file_url/1398)" Tuesday, October 1, 2024 **Seth Lloyd**, MIT [video](https://www.youtube.com/watch?v=MB-fD0pE3pk) [slides](/file_url/1402) "[Quantum Algorithms for Computing Homology](/file_url/1400)" Tuesday, October 15, 2024 **Kaifeng Bu**, Ohio State University [video](https://www.youtube.com/watch?v=hvpsVLSV3i8) "[A universal framework for Gaussian testing](/file_url/1411)" Tuesday, October 29, 2024 **Zhengwei Liu**, Tsinghua University [video](https://youtu.be/WuvrAUpFXjc) [slides](/file_url/1407) "[Insights on Analysis Meeting Topology in Quantum Field Theory](/file_url/1405)" Tuesday, November 12, 2024 **Liyuan Chen,** Harvard [video](https://youtu.be/VtMpytDj8SU) [slides](/file_url/1410) "[Universal Circuit Set with an S3 Quantum Double](/file_url/1408)" Tuesday, November 26, 2024 **Arthur Parzygnat**, MIT [video](https://youtu.be/Dp-gCWPorxM) [handout](/file_url/1415) "[A temporal analogue of quantum states for sequential measurements and time-reversal symmetry](/file_url/1412)" Tuesday, December 3, 2024 **Elia Portnoy**, MIT [video](https://youtu.be/FCT2TC-8Y0I) [slides](/file_url/1416) "[Quantum error-correcting codes, systolic geometry, and quantitative embeddings](/file_url/1413)" Tuesday, February 25, 2025 **Madelyn Cain**, Harvard [video](https://youtu.be/YdziXf9HJjk) [slides](/sites/g/files/omnuum6611/files/2025-03/cain_mpl_seminar.pdf "Madelyn Cain Slide Deck 2/25/2025") "[Low overhead fault tolerance for universal quantum computation](/sites/g/files/omnuum6611/files/2025-03/25-02-25%20Maddie%20Cain%20Seminar.pdf "25/2/25 Madelyn Cain")" Tuesday, March 11, 2025 **Michael Douglas**, Harvard [video](https://www.youtube.com/watch?v=ryW9wfQ9hLo) [slides](/sites/g/files/omnuum6611/files/2025-03/25-03-11%20Michael%20Douglas%20Slides.pdf "Michael Douglas Slides 3/11/2025") "[AI in math and theoretical physics: status and prospects](/sites/g/files/omnuum6611/files/2025-03/25-03-11%20Michael%20Douglas%20Seminar.pdf "25/3/11 Michael Douglas")" Tuesday, April 8, 2025 **Zhengwei Liu**, Tsinghua University [video](https://www.youtube.com/watch?v=7czD88u4m9M) [slides](/sites/g/files/omnuum6611/files/2025-04/25-04-08%20Zhengwei%20Liu%20Seminar%20Slide%20Deck.pdf "Zhengwei Liu 4/8/2025 Slide Deck") "[Alterfold Theory and Entanglement Entropy](/sites/g/files/omnuum6611/files/2025-03/25-04-08%20Zhengwei%20Liu%20Seminar.pdf "Zhengwei Liu 4/8/2025 Poster")" Tuesday, April 15, 2025 **Zhengwei Liu**, Tsinghua University [video](https://www.youtube.com/watch?v=mtHWZfUsX5k) "[Alterfold Theory and Quantum Error Correction](/sites/g/files/omnuum6611/files/2025-03/25-04-15%20Zhengwei%20Liu%20Seminar.pdf "Zhengwei Liu 4/15/2025 Poster")" Thursday, May 15, 2025 Zhengwei Liu Tsinghua University [video](https://www.youtube.com/watch?v=goFRdHttb6E) [slides](/sites/g/files/omnuum6611/files/2025-05/25-05-15%20Zhengwei%20Liu%20Seminar%20Slide%20Deck.pdf "Zhengwei Liu 5/15/2025 Slide Deck") "[A new way to understand computational complexity](/sites/g/files/omnuum6611/files/2025-05/25-05-15%20Zhengwei%20Liu%20Seminar.pdf "Zhengwei Liu 5/15/2025 Poster")" ## 2023-2024 The Math Picture Language seminar will be held at **4:30 p.m. Boston time**. For the 2023-2024 school year, the seminar will take place in **Jefferson 256**. People can also join the seminar remotely. Click the link for a [Zoom Link for Tuesday Math Picture Language Seminars](https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09). Recorded seminars can be viewed on the [Mathemical Picture Language YouTube channel](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos). To subscribe to the seminar announcement mailing list, send an email with 'subscribe' in the subject line to: or sign up on this web page: [https://web.lists.fas.harvard.edu/mailman/lists/mathpicseminar.lists.fas...](https://web.lists.fas.harvard.edu/mailman/lists/mathpicseminar.lists.fas.harvard.edu/) **SCHEDULE** Tuesday, September 5, 2023 **Maciej Dunajski**, University of Cambridge [slides](/file_url/1331) [video](https://youtu.be/7xPc_5bsMtg) ["Equivalence principle, de-Sitter space, and twistor theory"](/file_url/1314) Tuesday, September 12, 2023 **Jun Yang**, Harvard University [slides](/file_url/1336) [video](https://youtu.be/VjSB428Uouw) [“Limit multiplicities, trace formulas and von Neumann dimensions”](/file_url/1329) Tuesday, September 19, 2023 **Man-Duen Choi**, University of Toronto [slides](/file_url/1339) [video](https://www.youtube.com/watch?v=OQm9KK1ort4) ["My Adventures in Quantumland"](/file_url/1321) Tuesday, September 26, 2023 **Ken Duffy**, Northeastern University [slides](/file_url/1340) [video](https://www.youtube.com/watch?v=sTXiBcyqU-A) ["An introduction to Forward Error Correction and Guessing Random Additive Noise Decoding"](/file_url/1323) Tuesday, October 3, 2023 **Madhu Sudan**, Harvard University [slides](/file_url/1343) [video](https://www.youtube.com/watch?v=qXNwUBNpbsk) ["Proofs and Computation"](/file_url/1335) Tuesday, October 10, 2023 *no seminar* Tuesday, October 17, 2023 **Graeme Smith**, Institute for Quantum Computing, University of Waterloo [slides](/file_url/1349) [video](https://www.youtube.com/watch?v=PSCn-b6Ub18&feature=youtu.be) ["Mathematical challenges in quantum information theory"](/file_url/1345) Tuesday, October 24, 2023 **Tzu-Chieh Wei**, Stony Brook University [slides](/file_url/1350) [video](https://www.youtube.com/watch?v=E1mn0RuKcUU) ["Learning marginals suffices!"](/file_url/1338) Tuesday, October 31, 2023 **Daniel Spielman**, Yale University [slides](/file_url/1356) [video](https://www.youtube.com/watch?v=KhUaImzb81w) ["Discrepancy Theory and Randomized Controlled Trials"](/file_url/1346) Tuesday, November 7, 2023 **Steven Girvin**, Yale Quantum Institute [slides](/file_url/1358) [video](https://youtu.be/SvpX8uRnG74) ["Adventures in Phase Space: Non-commuting coordinates meet quantum control and quantum error correction"](/file_url/1357) Tuesday, November 14, 2023 **Alina Vdovina**, City College of New York and Graduate Center, CUNY [slides](/file_url/1359) [video](https://www.youtube.com/watch?v=bd9CzRIo0_M) ["Higher dimensional digraphs from cube complexes and their spectral theory"](/file_url/1352) Tuesday, November 21, 2023 *no seminar* Tuesday, November 28, 2023 **David Evans**, Cardiff University [slides](/file_url/1363) [video](https://www.youtube.com/watch?v=jxJgK-TJfFU) ["On Quantum Symmetry"](/file_url/1360) Tuesday, December 5, 2023 **Dimitri Shlyakhtenko**, UCLA [slides](/file_url/1361) [video](https://www.youtube.com/watch?v=U_Mqo1h8jQ0) ["Free dimension via the Wasserstein Metric"](/file_url/1354) **Special Day, Time, & Place!** Thursday, December 14, 2023 at 4:30pm in Jefferson 356 **Ryan Babbush**, Google Research [slides](/file_url/1362) [video](https://www.youtube.com/watch?v=ciLNhsz3WJQ) [“The search for valuable applications of fault-tolerant quantum computers”](/file_url/1330) *WINTER BREAK* **New Day, Time, & Place!** Thursday, December 14, 2023 at 4:30pm in Jefferson 256 **Frederick Manners**, University of California, San Diego [slides](/file_url/1366) [video](https://youtu.be/mi921mdaKW0) ["Inverse theorems and approximate structure"](/file_url/1367) **Special Day & Place!** Wednesday, February 21 at 4:30pm in Jefferson 368 **Jacob Fox**, Stanford University [slides](/file_url/1371) [video](https://youtu.be/3eMIpfYx3IM) ["Subset Sums"](/file_url/1369) Tuesday, March 26, 2024 **Robert Huang**, Cal Tech [slides](/file_url/1384) [video](https://youtu.be/kNsa2DqmCj4) "[Certifying Almost All Quantum States with Few Single-qubit Measurements](/file_url/1379)" Tuesday, April 2, 2024 **Yufei Zhao**, MIT [slides](/file_url/1388) [video](https://www.youtube.com/watch?v=zxiEoFeFUBo) "[Equiangular Lines and Eigenvalue Multiplicity](/file_url/1375)" Tuesday, April 16, 2024 **Dolev Bluvstein**, Harvard [slides](/file_url/1393) [video](https://www.youtube.com/watch?v=x5L8K797zuo) "[Logical Quantum Processor Based on Reconfigurable Atom Arrays](/file_url/1382)" **Special Day & Place!** Monday, May 6, 2024 in Jefferson 453 **Shu-Heng Shao**, Stony Brook University [slides](/file_url/1396) [video](https://youtu.be/vqo1CXteXng) "[What's Done Cannot Be Undone: Non-Invertible Symmetries](/file_url/1390)" ## 2022-2023 The Math Picture Language seminar will be held at **9:30 a.m. Boston time**. Click the link for a [Zoom Link for Tuesday Math Picture Language Seminars](https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09). Recorded seminars can be viewed on the [Mathemical Picture Language YouTube channel](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos). To subscribe to the seminar announcement mailing list, send an email with 'subscribe' in the subject line to: or sign up on this web page: **SCHEDULE** Tuesday, September 20, 2022 **Melanie Wood**, Harvard University [video](https://youtu.be/f122wrwcyFw) [slides](/file_url/1312) ["Determining distributions of groups from their moments"](/file_url/1305) Tuesday, September 27, 2022 **Jens Eisert**, Freie Universität Berlin [video](https://youtu.be/HAKPulM08hs) ["A Single T-Gate Makes Quantum Distribution Learning Hard"](/file_url/1233) Tuesday, October 4, 2022 **Giacomo De Palma**, University of Bologna, Italy [video](https://youtu.be/HwLMRb8DlY0) [slides ](/file_url/1311) ["The quantum Wasserstein distance of order 1"](/file_url/1230) Tuesday, October 11, 2022 **Narutaka Ozawa**, Kyoto University [video](https://youtu.be/aMo9_w9z2yA) [slides](/file_url/1245) ["Kazhdan's property (T) for Aut(F\_n) and EL\_n(R)"](/file_url/1235) Tuesday, October 18, 2022 **Liang Jiang**, University of Chicago [video](https://youtu.be/kPA_L4nYqBU) ["Path-Independent Quantum Gates"](/file_url/1242) Tuesday, October 25, 2022 **Philippe Faist**, Freie Universität Berlin [video](https://youtu.be/M35TbLJcOH0) [slides](/file_url/1248) ["Time-energy uncertainty relation and quantum error correction for noisy quantum metrology"](/file_url/1244) Tuesday, November 1, 2022 **Eric Carlen**, Rutgers University [video](https://youtu.be/ln_93DZ9erA) [slides](/file_url/1251) ["Quantum Entropy Inequalities and Reversible Quantum Markov Semigroups as Gradient Flow for Quantum Relative Entropy"](/file_url/1247) Tuesday, November 8, 2022 **Kushal Seetharam**, MIT and Harvard University [video](https://youtu.be/RDbaVKzMk68) [slides](/file_url/1252) ["Quantum simulation of parameter-averaged NMR experiments"](/file_url/1250) Tuesday, November 15, 2022 **Roy Garcia**, Harvard University [video](https://youtu.be/pikuMFTDEbI) [slides](/file_url/1119) ["Resource theory of quantum scrambling"](/file_url/1240) **WINTER BREAK** Tuesday, January 31, 2023 **Beni Yoshida**, Perimeter Institute [video](https://youtu.be/sUrmytZNiAA) [slides](/file_url/1271) ["Holographic Scattering from Quantum Error-Collection"](/file_url/1256) Tuesday, February 7, 2023 **Dan Freed**, University of Texas [video](https://youtu.be/meOQXoN0QRc) [slides](/file_url/1277) ["What is an Anomaly?"](/file_url/1276) Tuesday, February 14, 2023 **Anne-Marie Aubert**, Centre National de la Recherche Scientifique [video](https://youtu.be/6RIrTyk4S2Y) [slides](/file_url/1310) ["A Bridge Between the Baum-Connes Conjecture and the Langlands Program"](/file_url/1278) Tuesday, February 21, 2023 **Dongling Deng**, Tsinghua University [video](https://youtu.be/c_E-uI1Drw8) [slides](/file_url/1281) ["Recent Advances in Quantum AI"](/file_url/1266) Tuesday, February 28, 2023 **Andrew Childs**, University of Maryland [video](https://youtu.be/_03meqlCjPs) [slides](/file_url/1284) ["Quantum divide and conquer"](/file_url/1270) Tuesday, March 6, 2023 **no seminar, spring break** Tuesday, March 13 2023 **no seminar, spring break** Tuesday, March 21, 2023 **Peter Love**, Tufts University [video](https://youtu.be/uU6SndzpTIE) [slides](/file_url/1308) ["Contextual Subspace Variational Quantum Eigensolver"](/file_url/1287) Tuesday, March 28, 2023 **Yitang Zhang**, University of California, Santa Barbara [video](https://youtu.be/VLFrXWuwrrk) [slides](/file_url/1309) ["Non-positive sequences in analytic number theory and the Landau-Siegel zero"](/file_url/1291) Tuesday, April 4, 2023 **John Cardy**, University of California, Berkeley, and All Souls College, Oxford [video](https://youtu.be/WfUhn2oNW18) [slides](/file_url/1295) ["The TTbar deformation of 2d quantum field theory and modular forms"](/file_url/1288) Tuesday, April 18, 2023 **Klaus Fredenhagen,** II. Institut für Theoretische Physik, Universität Hamburg [video](https://youtu.be/VfmLIPUVqtY) [slides](/file_url/1307) ["Constructing algebraic quantum field theory"](/file_url/1298) Tuesday, April 25, 2023 **Jesse Peterson**, Vanderbilt University [video](https://youtu.be/V5RMidClY24) ["Amenability and von Neumann algebras"](/file_url/1300) Tuesday, May 2, 2023 **Brian Swingle**, Brandeis University [video](https://youtu.be/qH9VLVcBMpk) ["Hydrodynamics and Corrections to Random Matrix Universality in Quantum Chaos"](/file_url/1302) Tuesday, May 9, 2023 **Kaifeng Bu**, Harvard University [video](https://youtu.be/1aGxGjwp8ws) [slides](/file_url/1306) ["Magic from a quantum convolutional approach"](/file_url/1304) ## Conference 2022 **New Frontiers: Interactions between Quantum Physics and Mathematics. Conference June 20-23, 2022** [schedule](/files/mathpicture/files/schedule.pdf) and [program](/file_url/1221). Recorded talks can be viewed on the [Mathematical Picture Language Youtube channel](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos). Thursday, June 23, 2022 **Nilanjana Datta**, University of Cambridge [video](https://www.youtube.com/watch?v=r4TWfjyCMU8) "Universal proofs of entropic continuity bounds via majorization flow" Thursday, June 23, 2022 **Marius Junge**, University of Illinois at Urbana-Champaign [video](https://www.youtube.com/watch?v=vfdJpqM_DJI) "Entropy decay in large open systems" Thursday, June 23, 2022 **Elchanan Mossel**, MIT [video](https://www.youtube.com/watch?v=8CsMt6n0BTc) "Variations of Hyper-contraction" Thursday, June 23, 2022 **Hari Arthanari**, Harvard Medical School/DFCI [video](https://www.youtube.com/watch?v=CoJ_EXnd95k) "Emerging frontiers in computational drug discovery" Wednesday, June 22, 2022 **Terry Gannon**, University of Alberta [video](https://www.youtube.com/watch?v=Fth_QnZQVVY) "Exotic quantum subgroups for any Lie algebra" Wednesday, June 22, 2022 **Aram Harrow**, MIT [video](https://www.youtube.com/watch?v=xdj7EApcFKo) "Quantum walks on hierarchical graphs" Wednesday, June 22, 2022 **Jun Yang**, Harvard University [video](https://www.youtube.com/watch?v=UJTBeHQtIZg) "The Plancherel Measure of an Adelic Group is the von Neumann Dimension" Wednesday, June 22, 2022 **Kaifeng Bu**, Harvard University [video](https://www.youtube.com/watch?v=qw6YK0wBDks) "Quantum circuit complexity and quantum resource" Wednesday, June 22, 2022 **Victor Ostrik**, University of Oregon [video](https://www.youtube.com/watch?v=uucF8IM2kYU) "Frobenius exact symmetric tensor categories." Wednesday, June 22, 2022 **Julia Plavnik**, Indiana University, Bloomington [video](https://www.youtube.com/watch?v=vRnezOiJvx4) "Zesting, condensation and gauging as quantum symmetries" Wednesday, June 22, 2022 **Shawn Cui**, Purdue University [video](https://www.youtube.com/watch?v=yIaVo92F1QA) "Trisection invariants of 4-manifolds from Hopf algebras" Wednesday, June 22, 2022 **Zhengwei Liu**, Tsinghua University and BIMSA [video](https://www.youtube.com/watch?v=xF9UEVrGzP4) "Quantum Fourier Analysis for Quantum Channels" Wednesday, June 22, 2022 **Peter Shor**, MIT [video](https://www.youtube.com/watch?v=B2L5GwH3UZs) "Quantum Money" Tuesday, June 21, 2022 **Edward Farhi**, MIT "An overview of the Quantum Approximate Optimization Algorithm" Tuesday, June 21, 2022 **Dave Penneys**, Ohio State University "Composing topological domain walls and anyon mobility" Tuesday, June 21, 2022 **Steven Flammia**, AWS Center for Quantum Computing "A Constructive Approach to Zauner's Conjecture via the Stark Conjectures" Tuesday, June 21, 2022 **Guoliang Yu**, Texas A&M University [video](https://www.youtube.com/watch?v=qNYAlyTj9r0) "An index theorem for manifolds with corners and scalar curvature rigidity" Tuesday, June 21, 2022 **Leonard Susskind**, Stanford University [video](https://www.youtube.com/watch?v=kk3oB6kx-Rg) "Infinite Temperature's not so hot." Tuesday, June 21, 2022 **Yasuyuki Kawahigashi**, University of Tokyo [video](https://www.youtube.com/watch?v=X4J4Rd0BsC8) "A characterization of a finite-dimensional commuting square producing a subfactor of finite depth" Tuesday, June 21, 2022 **Yury Polyanskiy**, MIT [video](https://www.youtube.com/watch?v=P7-Xtkra2s4) "Information propagation in low dimensions" Tuesday, June 21, 2022 **Jiaoyang Huang**, Courant Institute, NYU [video](https://www.youtube.com/watch?v=4NxU1zSBrbw) "Random Matrix Statistics" Tuesday, June 21, 2022 **Michael Freedman**, Microsoft [video](https://www.youtube.com/watch?v=w-0QwaPjc-o) "Smallest Interacting Universe" Monday, June 20, 2022 **Open Questions Session** [video](https://www.youtube.com/watch?v=zUTwmg-GWrc) Monday, June 20, 2022 **Daniel Loss**, University of Basel [video](https://www.youtube.com/watch?v=3VEH57TrtYI) "From Fractional Spin to Topological Magnons" Monday, June 20, 2022 **Hans Wenzl**, University of California, San Diego [video](https://www.youtube.com/watch?v=LyuiiQc57GQ) "Module Categories for WZW-Models" Monday, June 20, 2022 **Renato Renner**, ETH Zurich [video](https://www.youtube.com/watch?v=v_3bZbmXT9E) "A quantum information perspective on black holes" Monday, June 20, 2022 **Xiao-Gang Wen**, MIT [video](https://www.youtube.com/watch?v=y1k4Sk75IZE) "Phases and Phase transition from categorical symmetry" Monday, June 20, 2022 **Roberto Longo**, University of Rome Tor Vergata [video](https://www.youtube.com/watch?v=tggqki2u9fg) "Entropy and the modular Hamiltonian" Monday, June 20, 2022 **Zhenghan Wang**, Microsoft [video](https://www.youtube.com/watch?v=TewxT8r-yGo) "Spaces of Hamiltonians, symmetries of topological order, and Floquet codes" Monday, June 20, 2022 **Mikhail Lukin**, Harvard University [video](https://www.youtube.com/watch?v=yeb3MXLa_Yw) "Exploring new scientific frontiers using programmable atom arrays" ## 2021-2022 The Math Picture Language seminar will be held at **9:30 a.m. Boston time**. Click the link for [Zoom Link for Tuesday Math Picture Language Seminars](https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09). Recorded seminars can be viewed on the [Mathemical Picture Language YouTube channel](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos). Please email to be added to the seminar mailing list. Tuesday, June 7, 2022 **Patrick Coles,** Los Alamos National Laboratory [video](https://youtu.be/qK6sCdMA9qo) [slides](/file_url/1216) ["Training landscapes for parameterized quantum circuits"](/file_url/1207) Tuesday, May 24, 2022 **Alice Guionnet,** ENS Lyon [video](https://youtu.be/NJirqNw_dbU) ["Matrix models, the enumeration of maps and free probability"](/file_url/1201) Tuesday, May 17, 2022 **Israel Michael Sigal**, University of Toronto [video](https://youtu.be/vcyx3Qnpr2I) ["Long-time Dynamics in Quantum Mechanics and Condensed Matter Physics"](/file_url/1208) Tuesday, May 10, 2022 **Sitan Chen,** University of California Berkeley [video](https://youtu.be/yeY9h0Ildb0) [slides](/file_url/1209) ["Learning Polynomial Transformations"](/file_url/1200) Tuesday, May 3, 2022 **Ramon van Handel,** Princeton University [video](https://youtu.be/4hqgfRgeaDY) ["Nonasymptotic random matrix theory"](/file_url/1199) Tuesday, April 19, 2022 **Assaf Naor,** Princeton University [video](https://youtu.be/O4IJUqArfYU) ["Vertical versus horizontal isoperimetry"](/file_url/1197) Tuesday, April 12, 2022 **Jintai Ding,** Tsinghua University and Beijing Institute of Mathematical Sciences and Applications (BIMSA) [video](https://youtu.be/oJIKoqmRrYY) [slides](/file_url/1217) ["Post-quantum cryptography and post-quantum key exchange based on the LWE and RLWE problems"](/file_url/1196) Thursday, April 7, 2022 **NOTE DAY and DATE** **David Ruelle,** Institut des Hautes Etudes Scientifiques, Bures-sur-Yvette, France [video](https://youtu.be/jSul7BRj57k) [slides](/file_url/1205) ["A Natural Limitation for Properly Human Scientific Progress"](/file_url/1192) Tuesday, April 5, 2022 **Edward Frenkel,** University of California Berkeley [video](https://youtu.be/xiipgZQA4-c) [slides](/file_url/1194) ["Analytic Langlands correspondence for complex curves"](/file_url/1181) Tuesday, March 29, 2022 **Alice Guionnet,** ENS Lyon ***Rescheduled to May 24, 2022*** ["Matrix models, the enumeration of maps and free probability"](/file_url/1183) Tuesday, March 22, 2022 **Hsin-Yuan (Robert) Huang,** California Institute of Technology [video](https://youtu.be/A7MEBCjAoMw) [slides](/file_url/1206) ["Provably efficient machine learning for quantum many-body problems"](/file_url/1184) Tuesday, March 15, 2022 **No Seminar** Tuesday, March 8, 2022 **Thomas Spencer,** Institute for Advanced Study, Princeton [video](https://youtu.be/j6_K9Yg7wmU) [slides](/file_url/1188) ["Continuous symmetry breaking along the Nishimori line"](/file_url/1171) Tuesday, March 1, 2022 **Feng Xu,** University of California Riverside [video](https://youtu.be/Dt92OzE0km8) [slides](/file_url/1186) ["Rigorous results about entropy in QFT"](/file_url/1168) Tuesday, February 22, 2022 **Yury Polyanskiy**, MIT [video](https://youtu.be/oluMlCttglg) [slides](/file_url/1179) ["Uniqueness of BP fixed point for Ising models"](/file_url/1167) Tuesday, February 15, 2022 **Jian Ding**, Peking University [video](https://youtu.be/FHFBTErAIjo) [slides](/file_url/1187) ["Recent progress on the random field Ising model"](/file_url/1166) Tuesday, February 8, 2022 **Roland Bauerschmidt**, Cambridge University [video](https://youtu.be/oRSMNQQyY4M) [slides](/file_url/1174) ["Random forests and the OSp(1|2) nonlinear sigma model"](/file_url/1165) Tuesday, February 1, 2022 **Norman Yao**, Harvard University [video](https://youtu.be/RUsIHVsXriI) ["What is a time crystal?"](/file_url/1164) **Winter Break**: December 15, 2021 to January 31, 2022 Tuesday, December 14, 2021 **Guoliang Yu**, Texas A&M University [video](https://youtu.be/rLRTvHpC9Vg) [slides](/file_url/1163) ["Higher invariants of Dirac operators and positive scalar curvature"](/file_url/1161) Tuesday, December 7, 2021 **Alain Connes**, IHES and College de France [video](https://youtu.be/d8LgqGApvlo) [slides](/file_url/1173) ["Prolate spheroidal functions and zeta"](/file_url/1150) Tuesday, November 30, 2021 **Yue Lu**, Harvard University [video](https://youtu.be/RN6nFNbSGE8) ["Learning by Random Features and Kernel Random Matrices: Sharp Asymptotics and Universality Laws"](/file_url/1149) Tuesday, November 16, 2021 **Leslie Valiant**, Harvard University [video](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos) ["Holographic Algorithms"](/file_url/1144) Tuesday, November 9, 2021 **Semyon Dyatlov**, MIT [video](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos) [slides](/file_url/1141) ["Resonances for Open Quantum Maps"](/file_url/1140) Tuesday, November 2, 2021 **Seth Lloyd**, MIT [video](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos) [slides](/file_url/1136) [article](/file_url/1137) ["Quantum algorithms for topological and geometric analysis of data"](/file_url/1133) Tuesday, October 26, 2021 **Weinan E**, Princeton University and Beijing Institute of Big Data Research [video](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos) [slides](/file_url/1131) "[A Mathematical Perspective of Machine Learning](/file_url/1132)" Tuesday, October 19, 2021 **Jordan Cotler**, Harvard University [video](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos) [slides](/file_url/1128) ["Quantum-enhanced Learning using a Quantum Memory"](/file_url/1127) Tuesday, October 12, 2021 **Zhengwei Liu**, Tsinghua University & Yanqi Lake Beijing Institute of Mathematical Sciences and Applications [video](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos) [slides](/file_url/1126) ["Uncertainty Principles on Quantum Symmetries"](/file_url/1125) Tuesday, October 5, 2021 **Cynthia Dwork**, Harvard University. [video](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos) [slides](/file_url/1124) ["Differential Privacy: The Mathematical Bulwark Against Reidentification and Reconstruction"](/file_url/1122) ## 2019-2021 From March 24, 2020, the seminar will be held on **Tuesdays at 10:00 a.m. Boston time**. The link to all seminars from September 29, 2020, forward is [**Zoom Link for Tuesday Mathpicture Seminars**](https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09). Most seminars, from March 31, 2020, can be viewed at this [**Youtube Link for Past Seminars**](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos). ***We are now taking a summer break. Stay tuned for more seminars starting again in August!*** **Online:** **Tuesday, June 22, 2021** **Francis Brown,** All Souls College, Oxford University [Notes](/file_url/1118) [Video](https://www.youtube.com/watch?v=nSK2yfJr7Tw) ["Invariant differential forms, graph complexes, and Feynman integrals"](/event/online-seminar-francis-brown-all-souls-college-oxford-university) **Online:** **Tuesday, June 15, 2021** **Jeongwan Haah,** Microsoft [Notes](/file_url/1117) [Video](https://www.youtube.com/watch?v=y8n1Ej25TYc&t=52s) ["Topological phases of discrete time evolution"](/event/online-seminar-jeongwan-haah-microsoft) **No Seminar:** **Tuesday, June 8, 2021** **Online:** **Tuesday, June 1, 2021** **Svetlana Jitomirskaya,** University of California, Irvine [Slides](/file_url/1114) [Video](https://www.youtube.com/watch?v=TKvqZp9pem4) [“Fractal properties of the Hofstadter's butterfly and singular continuous spectrum of the critical almost Mathieu operator"](/file_url/1108) **Online:** **Tuesday, May 25, 2021** **Feng Xu,** University of California, Riverside ["Rigorous results about relative entropy in QFT"](/file_url/1106) **Online:** **Tuesday, May 18, 2021** **Yann LeCun****,** New York University and Facebook [Slides](/file_url/1107) [Video](https://www.youtube.com/watch?v=4lthJd3DNTM&t=3s) "[The Energy-Based Learning Model](/event/online-seminar-yann-lecun-facebook-and-new-york-university-energy-based-learning)" **Online:** **Tuesday, May 11, 2021** **Xun Gao**, Harvard University [Slides](/file_url/1162) [Video](https://youtu.be/cRVuLAW2Aoc) [“Understanding the Linear Cross Entropy Benchmark through a Statistical Physics Model”](/file_url/1104) **Online:** **Tuesday, May 4, 2021** **Rupert Frank,** Cal Tech and LMU [Slides](/file_url/1102) [Video](https://youtu.be/PD1J0YMoRT0) "[Lieb-Thirring Bounds and other Inequalities for Orthonormal Functions](/event/online-seminar-rupert-frank-ludwig-maximilians-universit%C3%A4t-m%C3%BCnchen-lieb-thirring)" **Online:** **Tuesday, April 27, 2021** **Bruno Nachtergaele,** University of California, Davis [Slides](/file_url/1103) [Video](https://youtu.be/hoy1Q__SQCg) "[Dimerization in Quantum Spin Chains With O(n) Symmetry](/event/online-seminar-bruno-nachtergaele-university-california-davis-dimerization-quantum)" **Online:** **Tuesday, April 20, 2021** **Haribabu Arthanari,** Harvard Medical School Slides [Video](https://youtu.be/NFb96r_kldU) "[Emerging Frontiers in Nuclear Magnetic Resonance](/event/online-seminar-haribabu-arthanari-harvard-medical-school-emerging-frontiers)" **Online:** **Tuesday, April 13, 2021** **Jens Hoppe,** Technische Universitat Braunschweig [Slides](/file_url/1097) [Video](https://youtu.be/dDAcOV0EJ1A) "[Aspects of M Theory](/event/online-seminar-jens-hoppe-technische-universitat-braunschweig-aspects-m-theory)" **Online:** **Tuesday, April 6, 2021** **Anton Alexeev,** University of Geneva [Slides](/file_url/1094) [Video](https://youtu.be/NxdBkE0GKEc) "[Conjugation of Words, Self-Intersections of Planar Curves, and Non-Commutative Divergence](/event/online-seminar-anton-alekseev-university-geneva-conjugation-words-self)" **Online:** **Tuesday, March 30, 2021** **Dietmar Bisch,** Vanderbilt University [Slides](/file_url/1090) [Video](https://youtu.be/qX1UbvelLK0) "[The Wondrous World of Hyperfinite Subfactors](/event/online-seminar-dietmar-bisch-vanderbilt-university-wondrous-world-hyperfinite)" **Online:** **Tuesday, March 23, 2021** **J. William Helton,** UCSD (Univeristy of California, San Diego) [Slides](/file_url/1089) [Video](https://youtu.be/xNkCtX28DpY) "[Noncommutative Real Algebraic Geometry and Quantum Games](/event/online-seminar-bill-helton-uc-san-diego-noncommutative-real-algebraic-geometry-and)" **Online:** **Tuesday, March 16, 2021** **Mikhail Lukin,** Harvard University "[Exploring New Scientific Frontiers with Programmable Quantum Systems](/event/online-seminar-mikhail-lukin-harvard-exploring-new-scientific-frontiers)" **Online:** **Tuesday, March 9, 2021** **Sorin Popa,** UCLA (University of California, Los Angeles) [Slides](/file_url/1083) [Video](https://youtu.be/fmK2lPCAEyI) "[Some Analysis Aspects Subfactor Theory](/event/online-seminar-sorin-popa-ucla-some-analysis-aspects-subfactor-theory)" **Online:** **Tuesday, March 2, 2021** **Antti Kupiainen,** University of Helsinki [Slides](/file_url/1080) [Video](https://youtu.be/W8Sr94VQsKU) "[Integrability of Liouville Theory](/event/online-seminar-antti-kupiainen-university-helsinki-integrability-liouville-theory)" **Online:** **Tuesday, February 23, 2021** **Jian-Wei Pan****,** USTC (University of Science and Technology of China) [Slides](/file_url/1079) [Video](https://youtu.be/dJO6Esiquu4) **Special time:** 9:30am EST "[From Multi-Photon Entanglement to Quantum Computational Advantage](/event/online-seminar-jian-wei-pan-university-science-and-technology-china-multi-photon)" **Online:** **Tuesday, February 16, 2021** **Emily Riehl,** Johns Hopkins University [Slides](/file_url/1073) [Video](https://youtu.be/ZVreRhrtUyM) "[Elements of ∞-Category Theory](/event/online-seminar-emily-riehl-johns-hopkins-university-elements-%E2%88%9E-category-theory)" **Online:** **Tuesday, February 9, 2021** **John Imbrie,** University of Virginia [Slides](/file_url/1070) [Video](https://youtu.be/mTAAJ5mGoGU) "[Many-Body Localization near the Critical Point](/event/online-seminar-john-imbrie-university-virginia-many-body-localization-near)" **Online:** **Tuesday, February 2, 2021** **Stefaan Vaes,** Katholieke Universiteit, Leuven [Slides](/file_url/1065) [Video](https://youtu.be/53Siwcydt7g) "[W\*-rigidity Paradigms for Embeddings of II₁ Factors](/event/online-seminar-stefaan-vaes-katholieke-universiteit-leuven-w-rigidity-paradigms)" **Online:** **Tuesday, January 26, 2021** **Matthias Christandl,** University of Copenhagen [Slides](/file_url/1059) [Video](https://youtu.be/tfNYkUSbnaI) "[Fault-Tolerant Coding for Quantum Communication](/event/online-seminar-matthias-christandl-university-copenhagen-fault-tolerant-coding)" **Online:** **Tuesday, January 19, 2021** **Kaifeng Bu,** Harvard University, visiting YMSC, Tsinghua University [Slides](/file_url/1057) [Video](https://youtu.be/PLArpzvC8Q4) "[Complexity of Neural Networks](/event/online-seminar-kaifeng-bu-harvard-university-and-tsinghua-university-complexity)" **Online:** **Tuesday, January 12, 2021** **Christopher Ryba,** University of California, Berkeley [Slides](/file_url/1054) [Video](https://youtu.be/Nw4FWM4Amz4) "[Stable Character Polynomials for Symmetric Groups](/event/online-seminar-christopher-ryba-uc-berkeley-stable-character-polynomials-symmetric)" **Online:** **Tuesday, January 5, 2021** **Renato Renner**, ETH Zürich [Slides](/file_url/1048) [Video](https://youtu.be/f2ITLDCRm2M) "[Fundamental Bound on Time Signal Generation](/event/online-seminar-renato-renner-eth-z%C3%BCrich-fundamental-bound-time-signal-generation)" **No Seminar:** **Tuesday, December 29, 2020** **Online:** **Tuesday, December 22, 2020** **Zhengwei Liu**, Tsinghua University [Slides](/file_url/1044) [Video](https://youtu.be/sbez_atSZj8) "[Brain-storming in Math and Physics - Dedicated to Arthur Jaffe](/event/online-seminar-zhengwei-liu-tsinghua-university-brain-storming-math-and-physics)" **Online:** **Tuesday, December 15, 2020** **Gian Michale Graf**, ETH Zurich [Slides](/file_url/1028) [Video](https://youtu.be/atWX2pSXf9w) "[Topology in Shallow-Water Waves: A Violation of Bulk-Edge Correspondenc](/event/online-seminar-gian-michele-graf-eth-zurich-topology-shallow-water-waves-violation)e" **Online:** **Tuesday, December 8, 2020** **Xiao-Gang Wen**, Massachusetts Institute of Technology [Slides](/file_url/1026) [Video](https://youtu.be/d_UE0otaOLQ) "[Symmetry as a Shadow of Topological Order](/event/online-seminar-xiao-gang-wen-mit-symmetry-shadow-topological-order)" **Online:** Wednesday, December 3 2020 **Arthur Jaffe** gave a talk in the CMSA-YMSC literature series [Slides](/file_url/1025) [Video](https://www.youtube.com/watch?v=RgQixyA2Gcs) "Is Relativity Compatible with Quantum Theory?" **Online:** **Tuesday, December 1, 2020** **Yasuyuki Kawahigashi**, University of Tokyo [Slides](/file_url/1022) [Video](https://youtu.be/iCoqCiibYSI) "[Topological Order, Tensor Networks and Subfactors](/event/online-seminar-yasuyuki-kawahigashi-university-tokyo-topological-order-tensor)" **No Seminar:** **Tuesday, November 24, 2020** **Online:** **Tuesday, November 17, 2020** **Quanhua Xu**, Université de Franche-Comté and Harbin Institute of Technology "[Mikhlin Type Fourier Multipliers on Free Groups and Free Products of von Neumann Algebras](/event/online-seminar-mikhlin-type-fourier-multipliers-free-groups-and-free-products-von)" [Slides](/file_url/1016) [Video](https://youtu.be/eaZaDdgHZBM) **Online:** **Tuesday, November 10, 2020** **Sergei Gukov**, California Institute of Technology [Slides](/file_url/1015) [Video](https://youtu.be/OpJcPhWsBpc) "[Learning to Unknot](/event/online-seminar-sergei-gukov-california-institute-technology-learning-unknot)" **Online:** **Tuesday, November 3, 2020** **Liang Kong**, SUSTech (South China University of Science and Technology) [Slides](/file_url/1014) [Video](https://youtu.be/hNQFA2WNx1Y) "[On the Classification of Topological Orders with Finite Internal Symmetries](/event/online-seminar-liang-kong-siqse-classification-topological-orders-finite-internal)" **Online:** **Tuesday, October 27, 2020** **Sebastien Palcoux**, Tsinghua University [Slides](/file_url/1009) [Video](https://youtu.be/WbV6yAfgP2I) "[The Quest of a Finite Purely-Quantum Group](/event/online-seminar-s%C3%A9bastien-palcoux-tsinghua-university-quest-finite-purely-quantum)" **Online:** **Tuesday, October 20, 2020** **Joost Slingerland**, National University of Ireland, Maynooth [Slides](/file_url/1002) [Video](https://youtu.be/Cys1e6RI1rc) "[Exploring Small Fusion Rings and Tensor Categories](/event/online-seminar-joost-slingerland-national-university-ireland-maynooth-exploring)" **Online:** **Tuesday, October 13, 2020** **Xun Gao**, Harvard University [Slides](/file_url/998) [Video](https://youtu.be/_zWjVXsTxkk) "[Fractionalization, Exactly Solvable Models, and Quantum Circuits](/event/online-seminar-xun-gao-harvard-evaluating-quantum-circuits-and-exactly-solvable)" **Online:** **Tuesday, October 6, 2020** **Zhenghan Wang**, Microsoft Station Q and UCSB [Slides](/file_url/994) [Video](https://youtu.be/75M9rtsnmXA) "[Reconstructing CFTs from TQFTs](/event/seminar-zhenghan-wang-microsoft-reconstructing-cfts-from-mtcs)" **Online:** **Tuesday, September 29, 2020** **David Evans**, University of Cardiff [Slides](/file_url/993) [Video](https://youtu.be/GqH97kPtKDw) "[K-theory of Operator Algebras, Orbifolds and Conformal Field Theory](/event/online-seminar-david-evans-cardiff-university-k-theory-operator-algebras-orbifolds)" **Online:** **Tuesday, September 22, 2020** **Yunxiang Ren**, Harvard University [Slides](/file_url/989) [Video](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos) "[Triangular Prism Equations and Categorification](/event/online-seminar-yunxiang-ren-harvard-triangular-prism-equations-and)" **Online:** **Tuesday, September 15, 2020** **Avi Wigderson**, Institute for Advanced Study [Slides](/file_url/987) [Powerpoint](/file_url/988) [Video](https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos) "[Optimization, Complexity, and Math](/event/online-seminar-avi-wigderson-institute-advanced-study-optimization-complexity-and)" **Online:** **Tuesday, September 8, 2020** **Nilanjana Datta**, Cambridge University [Slides](/file_url/986) [Video](https://www.youtube.com/watch?v=l0xvMY9nNe8&t=6s) "[Discriminating Between Unitary Quantum Processes](/event/online-seminar-nilanjana-datta-university-cambridge-discriminating-between-unitary)" **Online:** **Tuesday, September 1, 2020** **Jinsong Wu**, Harbin Institute of Technology [Slides](/file_url/980) [Video](https://www.youtube.com/watch?v=7_gU9Pj6id4&t=1s) "[Some Inequalities in Locally Compact Quantum Groups](/event/online-seminar-jinsong-wu-harbin-institute-technology-some-inequalities-locally)" **Online:** **Tuesday, August 25, 2020** **No Seminar** **Online:** **Tuesday, August 18, 2020** **Laurent Pascal Saloff-Coste**, Cornell University [Slides](/files/mathpicture/files/harvard.pdf) [Video](https://youtu.be/DmnKJK-OdUY) "[Is any compact Lie group uniformly doubling?](/event/online-seminar-laurent-pascal-saloff-coste-cornell-university-any-compact-lie)" **Online:** **Tuesday, August 11, 2020** **Marianne Leitner,** Dublin Institute for Advanced Studies (joint seminar with DIAS) [Slides](/file_url/972) [Video](https://www.youtube.com/watch?v=zXbZeS-MG0M&t=307s) "[Integrability, Rationality and Convolutions](/event/online-seminar-marianne-leitner-dublin-institute-advanced-studies-integrability)" **Online:** **Tuesday, August 4, 2020** **Gilles Pisier**, Texas A&M University and Sorbonne Université [Slides](/file_url/971) [Video](https://www.youtube.com/watch?v=HNGmmB6Yt9E&t=207s) "[A Non-nuclear C\*-algebra with the Weak Expectation Property and the Local Lifting Property](/event/online-seminar-gilles-pisier-texas-am-university-and-pierre-and-marie-curie)” **Online:** **Tuesday, July 28, 2020** **David Gross**, University of Cologne [Slides](/file_url/970) [Video](https://www.youtube.com/watch?v=qbDaC4CbOUA&t=212s) "[The Representation Theory of the Clifford Group, with Applications in Quantum Information](/event/online-seminar-david-gross-university-cologne-representation-theory-clifford-group)" **Online:** **Tuesday, July 21, 2020** **Vaughan Jones**, Vanderbilt University [Slides](/file_url/965) [Video](https://youtu.be/s7OvmKv4xfg) "[Applied von Neumann Algebra](/event/online-seminar-jones-vaughan-vanderbilt-university-applied-von-neumann-algebra)" **Online:** **Tuesday, July 14, 2020** **Paul Fendley**, All Souls College, Oxford University [Slides](/file_url/961) [Video](https://youtu.be/YQhSvcDcLFc) "[Integrability and Braided Tensor Categories](/event/online-seminar-paul-fendley-oxford-university-integrability-and-braided-tensor)" **Online:** **Tuesday, July 7, 2020** **Marius Junge**, University of Illinois at Urbana-Champaign [Slides](/file_url/990) [Video](https://www.youtube.com/watch?v=cXDo0xQuzyw) "[Decay Estimates and Complete Bakry-Emry Theory](/event/online-seminar-marius-junge-university-illinois-urbana-champlain-decay-estimates)" **Online:** **Tuesday, June 30, 2020** **Robert Raussendorf**, University of British Columbia [Slides](/file_url/957) [Video](https://www.youtube.com/watch?v=cYLW9jj80fo&t=3538s) "[A Hidden Variable Model for Universal Quantum Computation With Magic States on Qubits](/event/online-seminar-robert-raussendorf-university-british-columbia-hidden-variable)" **Online:** **Tuesday, June 23, 2020** **Zhengwei Liu**, Tsinghua University (visiting Harvard) [Slides](/file_url/952) [Video](https://youtu.be/H0f6OXqz0C4) "[Quantum Fourier Analysis](/event/online-seminar-zhengwei-liu-tsinghua-university-quantum-fourier-analysis)" **Online:** **Tuesday, June 16, 2020** **Matthew Hastings**, Microsoft Station Q and Redmond [Slides](/file_url/947) [Video](https://www.youtube.com/watch?v=b-A78IJpoy0) "[The Power of Adiabatic Quantum Computation with no Sign Problem](/event/online-seminar-matthew-hastings-microsoft-power-adiabatic-quantum-computation-no)" **Online:** **Tuesday, June 9, 2020** **Elizabeth Crosson**, University of New Mexico [Slides](/file_url/944) [Video](https://youtu.be/dtvS2ncyEIc) "[The Sign Problem and its Relation to the Spectral Gap of Quantum Many-Body Systems](/event/online-seminar-elizabeth-crosson-university-new-mexico-sign-problem-and-its)" **Online:** **Tuesday, June 2, 2020** **Shawn Cui**, Purdue University [Slides](/file_url/940) [Video](https://www.youtube.com/watch?v=_b8d-xbRvyM&t=917s&pbjreload=101) "[Kitaev's Finite Group Model as an Error Correcting Code](/event/online-seminar-shawn-cui-purdue-university-kitaevs-finite-group-model-error)" **Online:** **Tuesday, May 26, 2020** **Scott Aaronson**, University of Texas [Video](https://youtu.be/-as6i5BL1_8) "[From Archimedes to Quantum Supremacy](/event/online-seminar-scott-aaronson-university-texas-archimedes-quantum-supremacy)" **Online:** **Tuesday, May 19, 2020** **Alina Vdovina**, University of Newcastle [Slides](/file_url/934) [Video](https://www.youtube.com/watch?v=wYIb__FXuEc&t=6s) "[Buildings, C\*-Algebras and New Higher-Dimensional Analogues of the Thompson Groups](/event/online-seminar-alina-vdovina-university-newcastle-seminar-buildings-c-algebras-and)" **Online:** **Tuesday, May 12, 2020** **Werner Nahm**, Dublin Institute for Advanced Study [Slides](/file_url/931) [Video](https://youtu.be/3TW-1gHxwkE) "[Euclidean Quantum Field Theory: Axioms and Automorphic Forms](/event/online-seminar-werner-nahm-dias-euclidean-quantum-field-theory-axioms-and)" **Online:** **Tuesday, May 5, 2020** **Roberto Longo**, University of Rome Tor Vergata [Slides](/file_url/929) [Video](https://youtu.be/n7svXoev7H0) "[The Information in a Wave](/event/online-seminar-roberto-longo-university-rome-tor-vergata-information-wave)" **Postponed:** **Tuesday, April 28, 2020** **David Ruelle**, IHES (France) "[A Theory of Hydrodynamic Turbulence Based on Non-Equilibrium Statistical Mechanics](/event/seminar-david-ruelle-ihes-france-a-theory-hydrodynamic-turbulence-based-non-equilibrium-statistical-mechanics)" **Online:** **Tuesday, April 28 2020** **Daniel Gottesman****,** Perimeter Institute [Slides](/file_url/930) [Video](https://youtu.be/0Oec6eTwyyE) "[Graphical Proofs for Fault-Tolerant Quantum Computation](/event/online-seminar-daniel-gottesman-perimeter-institute-graphical-proofs)" **Online:** **Tuesday, April 21, 2020** **Jürg Fröhlich**, ETH Zürich [Slides](/file_url/927) [Video](https://youtu.be/EnYWccC2UEA) "[Kochen, Specker, Bell, and Others](/event/online-seminar-j%C3%BCrg-fr%C3%B6hlich-eth-z%C3%BCrich-kochen-specker-bell-and-others)" **Postponed:** **Tuesday, April 21, 2020** **Zhenghan Wang**, Microsoft Station Q and UCSB "[Ground-States of Topological Phases of Matter as Error Correction Codes](/event/seminar-zhenghan-wang-microsoft-ground-states-topological-phases-matter-error)" **Online:** **Tuesday, April 14 2020** **Thomas Spencer****,** Institute for Advanced Study, Princeton [Slides](/file_url/932) [Video](https://youtu.be/HcFS4mGUzls) "[Evolution of NLS with Bounded Data](/event/seminar-thomas-spencer-institute-advanced-study-princeton-evolution-of-nls-with-bounded-data)" **Online:** **Tuesday, April 7, 2020** **Leonard Gross**, Cornell Univesity [Slides](/file_url/933) [Video](https://youtu.be/FsiRYFkGis8) "[Equivalence of Helicity and Euclidean Self-Duality for Gauge Fields](/event/seminar-leonard-gross-cornell-university-equivalence-helicity-and-euclidean-self)" **Online:** **Tuesday, March 31 2020** **Ian Jauslin**, Princeton University [Slides](/file_url/928) [Video](https://youtu.be/Nz5XIyPbeIc) "[Liquid crystals and the Heilmann-Lieb model](/event/seminar-ian-jauslin-princeton-university-liquid-crystals)" **Online:** **Tuesday, March 24 2020** **Edward Farhi,** Google and MIT "[QAOA: Landscape Independence and the Sherrington-Kirkpatrick Model](/event/seminar-edward-farhi-mit-qada-landscape-indepdendence-and-sherrington-kirkpatrick)" Zoom (video presentation) at **Tuesday, March 10 2020** **Sergei Bravyi,** IBM "[Variational Quantum Algorithms: Obstacles and Opportunities](/event/seminar-sergey-bravyi-ibm-variational-quantum-algorithms-obstacles-and)" **Special time:** 3 pm **Thursday, March 5 2020** **James Glimm****,** SUNY at Stony Brook "[A Maximum Entropy Rate Principle and Other Turbulence Related Results and Speculations](/event/seminar-james-glimm-stony-brook-university-maximum-entropy-rate-principle-and)" **Special day and time:** Thursday, 4:30 pm **Tuesday, March 3 2020** **Weihua Liu,** University of Arizona “[On quantum distributional symmetries for \*-random variables](/event/seminar-weihua-liu-university-arizona-quantum-distributional-symmetries-random)” **Thursday, February 27 2020** **Nilin Abrahamsen****,** MIT **Special day and time:** Thursday, 11:00 am **Special location:** Lyman 338 "[Classical Algorithm for Ground States of Spin Trees](/event/seminar-nilin-abrahamsen-mit-classical-algorithm-ground-states-spin-trees)" **Tuesday, February 25 2020** **You Zhou,** Harvard "[Constructing Multipartite Bell Inequalities from Stabilizers](/event/seminar-you-zhou-harvard-constructing-multipartite-bell-inequalities-stabilizers)" **Tuesday, February 18 2020** **Linghang Kong,** MIT **Special time:** 3 pm "[Separation of Out-of-time-ordered Correlation and Entanglement](/event/seminar-linghang-kong-mit-separation-out-time-ordered-correlation-and-entanglement)" **Tuesday, February 11 2020** **Dominik Wild**, Harvard "[Quantum Algorithms for Classical Sampling Problems](/event/seminar-dominik-wild-harvard-quantum-algorithms-classical-sampling-problems)" **Tuesday, February 4 2020** **Zhengwei Liu****,** Tsinghua University "[Quantized Graphs and Quantum Error Correction](/event/seminar-zhengwei-liu-tsinghua-university-quantized-graphs-and-quantum-error-correction)" **Tuesday, January 28 2020** **Aram Harrow****,** MIT "[Phase Transitions in the Complexity of Simulating Random Shallow Quantum Circuits](/event/seminar-aram-harrow-mit-phase_transitions_in_the_complexity_of_simulating_random_shallow_quantum_circuits)" **Tuesday, January 7 2020** **Jin-Long Huang****,** University of California San Diego "[Exotic 3D Topologically Ordered States](/event/seminar-jin-long-huang-university-california-san-diego-exotic-3d-topologically)" **Tuesday, December 3 2019** **Christopher King****,** Northeastern University "[Contractive Bounds for Quantum Markov Semigroups](/event/seminar-christoph-king-northeastern-university-contractive-bounds-quantum-markov?admin_panel=1)" **Thursday, November 7 2019** **Leo Zhou**, Harvard **Special day and time:** Thursday, 11 am **Special location:** Lyman 338 "[Symmetry-Protected Dissipative Preparation of Matrix Product States](/event/seminar-harvard-leo-zhou-harvard-symmetry-protected-dissipative-preparation-matrix)" **Tuesday, November 12 2019** **Yichen Huang**, MIT "[Renyi Entanglement Entropy in Quantum Many-Body Systems](/event/seminar-yichen-huang-mit-renyi-entanglement-entropy-quantum-many-body-systems)" **Thursday, October 24 2019** **Chunlan Jiang****,** Heibei Normal University **Special day:** Thursday **Special location:** Lyman 338 ["Some Progress on the Problem of Invariant Subspaces"](/event/some-progress-problem-invariant-subspaces) **Tuesday, October 22 2019** **Juven Wang**, Harvard University "[Quantum 4d Yang-Mills Theories and Time-Reversal Symmetric 5d Higher-Gauge TQFT](/event/seminar-juven-wang-institute-advanced-study-quantum-4d-yang-mills-theories-and)" ## 2018-2019 This spring semester, **starting February 5, 2019,** seminars will generally be held in Jefferson 356 on Tuesdays at 3:00 p.m. This past fall semester, starting September 4, 2018, seminars were generally in Jefferson 356 on Tuesdays at 4:00 p.m. Exceptions are noted. **Tuesday, April 30 2019** **Shawn Cui,** Virginia Tech ["Four Dimensional Topological Quantum Field Theories from G-crossed Braided Categories"](/event/seminar-shawn-cui-virginia-tech-four-dimensional-topological-quantum-field) **Tuesday, April 23 2019** **Yi-Hong Zhang,** Tsinghua University ["Quantum many-body computation on a small quantum computer" ](/event/seminar-yi-hong-zhang-tsinghua-university-quantum-many-body-computation-small) **Tuesday, April 16 2019** **Emil Prodan,** Yeshiva University ["Pushing index theorems into the Sobolev" ](/event/seminar-emil-prodan-yeshiva-university-pushing-index-theorems-sobolev) **Tuesday, April 9 2019** **Claus Koestler,** University College Cork ["Markovianity as a distribution symmetry"](/event/seminar-claus-koestler-university-college-cork-markovianity-distribution-symmetry) **Special Extra Seminar,** **Tuesday, April 9 2019** **4:30PM** **Alina Vdovina,** Newcastle University ["Higher dimensional picture languages"](/event/seminar-alina-vdovina-newcastle-university-higher-dimensional-picture-languages) **Tuesday, April 2 2019** **Mikael Rordam and Magdalena Elena Musat,** University of Copenhagen ***3PM*** : Mikael Roradam, ["Highlights of the classification of simple nuclear C\*-algebras"](/event/seminar-mikael-rordam-and-magdalena-elena-musat-university-copenhagen-tba) ***4PM:*** Magdalena Elena Musat, ["Quantum correlations, factorizable channels, and the Connes Embedding Problem"](/event/seminar-magdalena-musat-university-copenhagen-tba) **Tuesday, March 26 2019** **Jinsong Wu,** Harbin Institute of Technology ["Fourier Analysis on Fusion Rings"](/event/seminar-jinsong-wu-harbin-institute-technology-fourier-analysis-fusion-rings) **Tuesday, March 12 2019** **Youwei Zhao,** University of Science and Technology of China ["A review of the surface code from an experimental perspective"](/event/seminar-youwei-zhao-university-science-and-technology-china-review-surface-code) **Tuesday, March 5 2019** **Kaifeng Bu,** Harvard and Zhejiang University ["Efficient classical simulation of Clifford circuits with nonstabilizer input states"](/event/seminar-kaifeng-bu-harvard-zhejiang-efficient-classical-simulation-clifford) **Tuesday, February 26 2019** **Fei Wei,** Harvard ["Entropy of arithmetic functions and arithmetic compactifications"](/event/seminar-fei-wei-harvard-entropy-arithmetic-functions-and-arithmetic) **Tuesday, February 12 2019** **Liang Kong,** Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology ["A unified mathematical theory of gapped and gapless boundaries of 2d topological orders"](/event/seminar-liang-kong-southern-university-science-and-technology-unified-mathematical) **Tuesday, February 5 2019** **Zhengwei Liu,** Harvard ["Quantum Error Correcting Codes"](/event/seminar-zhengwei-liu-harvard-quantum-error-correcting-codes?admin_panel=1) **Tuesday, November 13 2018** **William Norledge** Pennsylvania State University ["The adjoint braid arrangement as a free Lie algebra in species via the Steinmann relations"](/event/seminar-william-norledge-pennsylvania-state-university-adjoint-braid-arrangement) **Friday, November 9 2018** **Xun Gao** Harvard University and Max Planck Institute for Quantum Optics **Special Day, Special Time: Now on** Friday 3:30PM, Jefferson 256 ["Pictorial language in quantum computation"](/event/seminar-xun-gao-harvard-university-and-max-planck-institute-quantum-optics) **Tuesday, October 30 2018** **Chunlan Jiang** Hebei Normal University ["Similarity Invariants of Geometric Operators"](/event/seminar-chunlan-jiang-hebei-normal-university-similarity-invariants-geometric?admin_panel=1) **Tuesday, October 23 2018** **Shamil Shakirov** Harvard University ["Rational integrable systems associated with higher genus surfaces"](/event/seminar-shamil-shakirov-harvard-university-rational-integrable-systems-associated) **Tuesday, October 16 2018** **Christoph Gorgulla**, Harvard Medical School ["A quantum mechanical free energy method based on Feynman's path integral formulation"](/event/seminar-christoph-gorgulla-harvard-quantum-mechanical-free-energy-method-based?admin_panel=1) **Tuesday, October 9 2018** **Jean-Bernard Zuber**, Sorbonne Université ["ADE and all that, 30 years after"](/event/seminar-jean-bernard-zuber-universit%C3%A9-pierre-et-marie-curie-ade-and-all-30-years) **Friday, October 5 2018** **Semyon Dyatlov**, University of California, Berkeley and MIT **Special Day, Extra Seminar:** Friday 4:30PM **Special Location:** Jefferson 453 ["Fractal uncertainty principle and quantum chaos"](/event/seminar-semyon-dyatlov-berkeleymit-fractal-uncertainty-principle-and-quantum-chaos) **Tuesday, October 2 2018** **Victor Kac**, MIT **Special Time:** 5:00 PM "[Multiplicative Poisson vertex algebras and differential-difference Hamiltonian equations](/event/seminar-victor-kac-mit-multiplicative-poisson-vertex-algebras-and-differential)" **Tuesday, September 25 2018** **Pavel Etingof**, MIT ["New symmetric tensor categories in positive characteristic"](/event/seminar-pavel-etingof-mit-new-symmetric-tensor-categories-positive-characteristic) **Tuesday, September 18 2018** **Liming Ge**, UNH and Chinese Academy of Sciences ["On Multiplicative Fourier Transform"](/event/seminar-liming-ge-unh-and-cas-multiplicative-fourier-transform?) **Friday, September 14 2018** **Zhengwei Liu,** Harvard **Special Time and Location:** Infinite Dimensional Analysis Seminar. Friday, September 14 at 3pm in MIT Room 2-136 "[Quantum Fourier Analysis](https://math.mit.edu/seminars/infdim/)" **Tuesday September 11 2018 and Wednesday September 12**: The regular seminar will be replaced by the [2018 Ahlfors Lectures on machine learning by **Sanjeev Arora**.](http://www.math.harvard.edu/conferences/ahlfors18/index.html) **Friday, September 7, 2018** **Zhengwei Liu,** Harvard **Special Time and Location:** Tufts University Mathematics Colloquium. Friday, September 7 at 4pm. Tea at 3:30pm Bromfield-Pearson 101 [Quantum Fourier Analysis](/%20http://math.tufts.edu/seminars/colloquia.htm) **Tuesday, September 4 2018** **Bohan Fang**, Peking University ["Mirror symmetry for the toric Calabi-Yau 3-folds"](/event/seminar-bohan-fang-pku-mirror-symmetry-toric-calabi-yau-3-folds) ## 2017-2018 This academic year, a seminar series in mathematical physics will be held in Jefferson 356 on Tuesdays at 4:00 p.m. Arthur Jaffe and Zhengwei Liu commenced the series with a [talk introducing the Mathematical Picture Language Project](/event/higher-representation-theory-seminar) on September 5th. **2017-2018 Mathematical Physics Seminars** **Jefferson 356, 4:00 p.m.** **Tuesday, April 10 2018** **Zhiwei Yun**, MIT ["Hitchin moduli spaces in automorphic representation theory"](/event/seminar-zhiwei-yun-mit-hitchin-moduli-spaces-automorphic-representation-theory?admin_panel=1) **Tuesday, April 3 2018** **Marcel Bischoff,** Ohio University ["Quantum Symmetries and Conformal Nets"](/event/mathematical-physics-seminar-marcel-bischoff-quantum-symmetries-and-conformal-nets?admin_panel=1) **Tuesday, March 27 2018** **Feng Xu**, UC Riverside ["On questions around the reconstruction program"](/event/mathematical-physics-seminar-feng-xu-questions-around-reconstruction-program-j356?admin_panel=1) **Friday March 23 2018** **Wei Zhang**, MIT **Special day and time**: 3:00 p.m. Jefferson 250 ["Superpositivity of L-functions and 'completion of square'"](/event/seminar-wei-zhang-mit-superpositivity-l-functions-and-completion-square-j250) **Tuesday, March 20 2018** **Jürg Fröhlich**, ETH Zurich ["Physics in 2D – from the Kosterlitz-Thouless Transition to Topological Insulators"](/event/mathematical-physics-seminar-jurg-frohlich-physics-2d-%E2%80%93-kosterlitz-thouless?admin_panel=1) **Tuesday, February 27 2018** **Hans Wenzl**, UC San Diego ["Coideal Algebras and Subfactors"](/event/mathematical-physics-seminar-hans-wenzl-coideal-algebras-and-subfactors-j356) **Friday February 23 2018** **Xinqi Gong**, Renin University in China **Special day and time**: 3:00 p.m. Jefferson 250 ["Mathematical Intelligence Applications in Bio-medical Problems"](/event/mathematical-physics-seminar-xinqi-gong-mathematical-intelligence-applications-bio?admin_panel=1) **Tuesday, February 13 2018** **Nicholas Early**, University of Minnesota ["Canonical bases for permutohedral plates"](/event/mathematical-physics-seminar-nicholas-early-canonical-bases-permutohedral-plates?admin_panel=1) **Friday, February 9 2018** **Boqing Xue**, Chinese Academy of Sciences **Special day and time**: 10:00 a.m. Jefferson 453 ["A basic introduction to the Riemann hypothesis"](/event/mathematical-physics-seminar-boqing-xue-basic-introduction-riemann-hypothesis-j250?admin_panel=1) **Tuesday, February 6 2018** **Jacob Shapiro**, ETH Zurich ["Bulk-Edge Duality and Complete Localization for Disordered Chiral Chains"](/event/mathematical-physics-seminar-jacob-shapiro-bulk-edge-duality-and-complete) **Friday, February 2 2018** **Yunxiang Ren**, Tennessee State University **Special day and time**: 4:00 p.m. Jefferson 250 ["A new skein theory for One-Way Yang-Baxter planar algebras"](/event/mathematical-physics-seminar-yunxiang-ren-skein-theory-presentations-thompson?admin_panel=1) **Tuesday, January 30 2018** **Kaifeng Bu**, Harvard University and Zhejiang University ["de Finetti Theorems for Braiding Parafermions"](/event/mathematical-physics-seminar-kaifeng-buitbd-j356) **Tuesday, January 23 2018** **Bin Gui**, Vanderbilt University ["A unitary tensor product theory for unitary vertex operator algebra modules"](/event/mathematical-physics-seminar-bin-gui-tbd-j356?delta=0) **Tuesday, January 16 2018** **Marco de Renzi**, University of Paris 7 ["Renormalized Hennings Invariants and TQFTs"](/event/mathematical-physics-seminar-marco-de-renzi-tbd-j356) **Tuesday, November 14** **2017** **Dennis Gaitsgory**, Harvard University ["Higher representation theory"](/event/mathematical-physics-seminar-dennis-gaitsgory-higher-representation-theory-j356) **Tuesday, November 7** **2017** **Liming Ge**, UNH and Chinese Academy of Science ["From Riemann and Hilbert to Kadison-Singer"](/event/mathematical-physics-seminar-liming-ge-j356) **Tuesday, October 31** **2017** **Zhenghan Wang**, Microsoft Station Q ["Reconstructing chiral CFTs/VOAs from 2D TQFTs/MTCs"](/event/mathematical-physics-seminar-zhenghan-wang-reconstructing-chiral-cftsvoas-2d) **Tuesday, October 24** **2017** No Seminar **Tuesday, October 17** **2017** No Seminar **Thursday, October 12** **2017** **Yasu Kawahigashi**, University of Tokyo **Special day and time**: 2:00 p.m. Jefferson 453 [“From vertex operator algebras to operator algebras and back”](/event/mathematical-physics-seminar-yasuyuki-kawahigashi-vertex-operator-algebras) **Tuesday, October 10** **2017** **Michael Hopkins**, Harvard University ["Reflection Positivity and Invertible Topological Phases"](/event/mathematical-physics-seminar-michael-hopkins-j356) **Tuesday, October 3** **2017** **Alina Vdovina**, Newcastle University, UK [“Buildings, surfaces and quaternions” ](/event/mathematical-physics-seminar-alina-vdovina-buildings-surfaces-and-quaternions-j356) Tuesday, September 26 Jinsong Wu, Harvard University [“The Brascamp-Lieb Inequalities for Planar Algebras”](/event/mathematical-physics-seminar-jinsong-wu-brascamp-lieb-inequalities-planar-algebras) **Tuesday, September 19** **2017** No Seminar, [Brian Greene Public Lecture](https://www.radcliffe.harvard.edu/event/2017-brian-greene-lecture) **Tuesday, September 12** **2017** **William Norledge**, Harvard University [“A Construction of Lattices in Buildings”](/event/mathematical-physics-seminar-william-norledge-construction-lattices-buildings-j356) **Tuesday, September 5** **2017** **Arthur Jaffe and Zhengwei Liu**, Harvard University [“An Introduction to the Picture Language Project”](/event/higher-representation-theory-seminar)