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UID:20251108T222206EST-9807bpvsMA@132.216.98.100
DTSTAMP:20251109T032206Z
DESCRIPTION:Title: 3-manifolds that bound no definite 4-manifold\n\nAbstrac
 t: All 3-manifolds bound 4-manifolds\, and many constructions of 3-manifol
 ds automatically come with a 4-manifold bounding it. Oftentimes these 4-ma
 nifolds have definite intersection form. Using Heegaard Floer correction t
 erms and an analysis of short characteristic covectors in bimodular lattic
 es\, we give an obstruction for a 3-manifold to bound a definite 4-manifol
 d\, and produce some concrete examples. This is joint work with Kyle Larso
 n.\n\nPlease visit: http://www.cirget.uqam.ca/en/seminars.html\n
DTSTART:20211029T150000Z
DTEND:20211029T160000Z
SUMMARY:Marco Golla (Université de Nantes)
URL:/mathstat/channels/event/marco-golla-universite-de
 -nantes-334370
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