[Turkmath:4146] Bilkent Topoloji Semineri - Ian Hambleton - 21.10.2019

[Bilkent Mathematics]

Değerli liste üyeleri,
 
Bilkent Matematik Bölümü Topoloji Seminerleri kapsamında 21 Ekim'de Ian Hambleton konuşmacı olacaktır.
 
Ian Hambleton (McMaster University)

"Group actions on homology 3-spheres" 

Özet: I will discuss finite group actions on integral or rational homology 3-spheres. The main examples for this talk are the Brieskorn integral homology 3-spheres $M(p,q,r)$ arising from isolated singularities, which bound smooth 4-manifolds with definite intersection forms. In addition, there are special infinite families of Brieskorn homology 3-spheres which can be realized as boundaries of smooth contractible 4-manifolds. We ask whether the periodic actions on Brieskorn spheres extend to smooth actions with isolated fixed points on one of these associated 4-manifolds. This is joint work with Nima Anvari.


Tarih: 21 Ekim 2019 Pazartesi, 13:40

Yer: SA - 141

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Bilkent Üniversitesi Matematik Bölümü
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