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Friday, March 26, 2021

Friday, March 26, 2021 — 2:30 PM EDT

Oğuz Şavk, Bogaziçi University

"Classical and new plumbings bounding contractible manifolds and homology balls"

A central problem in low-dimensional topology asks which homology 3-spheres bound contractible 4-manifolds and homology 4-balls. In this talk, we address this problem for plumbed 3-manifolds and we present the classical and new results together. Our approach is based on Mazur’s famous argument which provides a unification of all results in a fairly simple way.

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