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X-WR-CALNAME;VALUE=TEXT:Online: Seminar, Dietmar Bisch (Vanderbilt University), The Wondrous World of Hyperfinite Subfactors
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SUMMARY:Online: Seminar, Dietmar Bisch (Vanderbilt University), The Wondrous World of Hyperfinite Subfactors
DESCRIPTION:<p>	<drupal-media data-entity-type="media" data-entity-uuid="cc4facef-5ceb-4101-a501-792916e92059" alt="Bisch" data-view-mode="hwp_medium"></drupal-media></p><p>	<strong>Location: </strong>Zoom <a href="https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09" title="">https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09</a></p><p>	<strong>Time: </strong>Tuesday, March 30, 2021, 10:00 AM (Eastern US), 15:00 (UK/Eire), 16:00 (Central Europe), 22:00 (China)</p><p>	<strong>Title:</strong> The Wondrous World of Hyperfinite Subfactors</p><p>	<strong>Abstract: </strong>The hyperfinite II<sub>1</sub> factor contains a wealth of subfactors, many of which give rise to new and fascinating mathematical structures. For instance, the standard representation of a subfactor generates a certain unitary tensor category that Jones described as (what he called) a “planar algebra.” It is a complete invariant for amenable, hyperfinite subfactors due to a deep result of Popa. However, generic subfactors are not amenable, and one typically does not know how to distinguish them. I will discuss a notion of “noncommutativity” for a subfactor that provides an invariant that is complementary to the planar algebra. Bare hand constructions of hyperfinite subfactors generally lead to “commutative” examples, and I will explain a theorem that allows us to produce “very noncommutative” ones as well. It involves actions of suitable groups on the hyperfinite II<sub>1</sub> factor.</p><p>	<strong>Additional Ways to Join</strong><br>Join by telephone (use any number to dial in)<br>        +1 929 436 2866<br>        +1 312 626 6799<br>        +1 669 900 6833<br>        400 669 9381 China Toll-free</p><p>	International numbers available: <a href="https://harvard.zoom.us/u/aclg6kOggb">https://harvar</a><a href="https://harvard.zoom.us/u/aclg6kOggb">d.zoom.us/u/aclg6kOggb</a></p><p>	One tap mobile: +19294362866,,779283357# US (New York)<br>    <br>Join by SIP conference room system<br>Meeting ID: 779 283 357<br><a href="mailto:779283357@zoomcrc.com">779283357@zoomcrc.com</a></p><p>	<strong>Attachments</strong></p>
LOCATION:Zoom
STATUS:CONFIRMED
DTSTART:20210330T140000Z
DTEND:20210330T140000Z
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