BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//UM//UM*Events//EN
CALSCALE:GREGORIAN
BEGIN:VTIMEZONE
TZID:America/Detroit
TZURL:http://tzurl.org/zoneinfo/America/Detroit
X-LIC-LOCATION:America/Detroit
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20070311T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20071104T020000
RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20260916T102118
DTSTART;TZID=America/Detroit:20261204T160000
DTEND;TZID=America/Detroit:20261204T170000
SUMMARY:Workshop / Seminar:Topology seminar: Canonical bases of skein algebras\, and categorification
DESCRIPTION:Abstract: For an oriented surface S\, the Kauffman bracket skein algebra of S is an algebra generated by isotopy classes of framed links in the thickened surface S x (-1\,1) modulo skein relations\, and it quantizes the SL2 character variety of S. I will review various vector space bases of the skein algebra\, and discuss the problem on the positivity of structure constants. I will spend enough time to give an elementary introduction\, and towards the end I will briefly present recently known results\, from quantum cluster algebras and mirror symmetry\, from foams\, and from quantized K-theoretic Coulomb branches. I hope to focus more on the last one\, which is based on my joint work 2505.13332 with Dylan Allegretti and Peng Shan\, which gives a monoidal categorification of the skein algebra of a genus zero punctured surface.
UID:152188-21913200@events.umich.edu
URL:https://events.umich.edu/event/152188
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 3866
CONTACT:
END:VEVENT
END:VCALENDAR