# Online: Seminar, Yasuyuki Kawahigashi (University of Tokyo), Topological Order, Tensor Networks and Subfactors #### calendar\_today Date and Time **December 1, 2020** 10:00AM - 10:00AM EST #### pin\_drop Location **Zoom** ![Kawahigashi](/sites/g/files/omnuum6611/files/styles/hwp_1_1__720x720_scale/public/mathpicture/files/kawahigashi_01.png?itok=8Qu7Cbc5) **Location:** Zoom **Time CHANGE:** Tuesday, December 1, 2020, 10:00 AM (Eastern US), 15:00 (UK/Eire), 16:00 (Central Europe), 23:00 (China) **Title:** Topological Order, Tensor Networks and Subfactors **Abstract:** We present recent progress on studies of 2-dimensional topological order in terms of tensor networks and its connections to subfactor theory. We explain how Drinfel'd centers and higher relative commutants naturally appear in this context and use of picture language in this study. **Additional Ways to Join** Join by telephone (use any number to dial in) +1 929 436 2866 +1 312 626 6799 +1 669 900 6833 400 669 9381 China Toll-free International numbers available: [https://harvar](https://harvard.zoom.us/u/aclg6kOggb)[d.zoom.us/u/aclg6kOggb](https://harvard.zoom.us/u/aclg6kOggb) One tap mobile: +19294362866,,779283357# US (New York) Join by SIP conference room system Meeting ID: 779 283 357 <779283357@zoomcrc.com> **Attachments** --- Attachments- [ picture\_as\_pdf Flyer.pdf ](/sites/g/files/omnuum6611/files/mathpicture/files/kawahigashi_seminar_december_1_2020.pdf) --- Share on:- [ Facebook ](#) - [ Twitter ](#) - [ Linkedin ](#) Save: [ Add to calendar calendar\_today ](https://mathpicture.fas.harvard.edu/node/1535698/event-feed.ics) Copy link link