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VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
X-WR-CALNAME:MIT-Harvard-MSR Combinatorics Seminar
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20261018T032450Z
UID:tag:localist.com\,2008:EventInstance_41244420485721
DTSTART:20221012T201500Z
DTEND:20221012T211500Z
DESCRIPTION:Speaker:  Melissa Sherman-Bennett  (MIT)\n\nTitle:  Cluster str
 ucture on braid varieties from 3D plabic graphs\n\nAbstract:  \n\nBraid va
 rieties are smooth irreducible affine varieties associated to any positive
  braid.  Their cohomology is expected to contain information about the Kho
 vanov-Rozansky homology of a related link.  Special cases of braid varieti
 es include Richardson varieties\, double Bruhat cells\, and double Bott-Sa
 melson cells.  Cluster algebras are a class of commutative rings with a ri
 ch combinatorial structure\, introduced by Fomin and Zelevinsky.  I'll dis
 cuss joint work with P. Galashin\, T. Lam and D. Speyer in which we show t
 he coordinate rings of braid varieties are cluster algebras.  Seeds for th
 ese cluster algebras come from "3D plabic graphs"\, which are bicolored gr
 aphs embedded in a 3-dimensional ball and generalized postnikov's plabic g
 raphs for positroid varieties.
LOCATION:MIT-Department of Mathematics\, Room 2-132
SUMMARY:MIT-Harvard-MSR Combinatorics Seminar
URL;VALUE=URI:https://calendar.mit.edu/event/mit-harvard-msr_combinatorics_
 seminar_6118
CATEGORIES:Conferences/Seminars/Lectures
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