Instantons and lattices of smooth 4-manifolds with boundary
GAUGE-TOPOLOGY-SYMPLECTIC
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March 29, 2019 3:30 pm - 4:30 pm
Science Center 507
Address:
1 Oxford Street, Cambridge, MA 02138 USA
Speaker:
Chris Scaduto - Simons Center
Abstract:
Given a 3-manifold Y, what are the possible definite intersection forms of smooth 4-manifolds with boundary Y? Donaldson's theorem says that if Y is the 3-sphere, then all such intersection forms are standard integer Euclidean lattices. I will survey some new progress on this problem, for other 3-manifolds, that comes from instanton Floer theory.