Stable equivalence relations of 4-manifolds

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• Daniel Kasprowski (Southampton)
• Wednesday 10 May 2023, 16:00-17:00
• MR13.

If you have a question about this talk, please contact Oscar Randal-Williams.

Kreck’s modified surgery gives an approach to classify 2n-manifolds up to stable diffeomorphism, i.e. up to a connected sum with copies of S^{n x S}n. In dimension 4, we use a combination of modified and classical surgery to compare the stable diffeomorphism classification with other stable equivalence relations. Most importantly, we consider stable homotopy equivalence. This is joint work with Johnny Nicholson and Simona Veselá.

This talk is part of the Differential Geometry and Topology Seminar series.

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