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SUMMARY:Mike Miller Eismeier (Vermont Univ.)
DTSTART:20260424T150000Z
DTEND:20260424T161500Z
DTSTAMP:20260513T193648Z
UID:CIRGET/161
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CIRGET/161/"
 >Mod-2 instanton homology and Dehn surgery</a>\nby Mike Miller Eismeier (V
 ermont Univ.) as part of CRM - Séminaire du CIRGET / Géométrie et Topol
 ogie\n\nLecture held in PK-5115.\n\nAbstract\nKim Froyshov has introduced 
 new homology cobordism invariants q2(Y)\, q3(Y) coming from the study of m
 od-2 instanton homology. q3\, in particular\, has some remarkable properti
 es: if Y\, Y' cobound a 4-manifold W\, then |q3(Y) - q3(Y')| is bounded in
  terms of homological invariants of W. I will explain the origin of this b
 ound\, how it leads to a resolution of the surgery number question\, and d
 irections for further inquiry.\n\nThis talk is based on forthcoming joint 
 work with Ali Daemi and Xingpei Liu.\n
LOCATION:https://researchseminars.org/talk/CIRGET/161/
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