Minimal Euler Characteristics for Even-Dimensional Manifolds with Finite Fundamental Group

Abstract: In this talk we will discuss estimates for the minimal Euler characteristic of even dimensional manifolds with a given finite fundamental group and a highly connected universal cover. In particular we strengthen the Hausmann-Weinberger invariants and extend them to higher dimensions. As an application we obtain new restrictions for non-abelian finite groups arising as fundamental groups of rational homology 4–spheres. This is joint work with Ian Hambleton.

algebraic geometryanalysis of PDEsalgebraic topologycomplex variablesdifferential geometrygeneral topologygeometric topologyK-theory and homologymetric geometrysymplectic geometry

Audience: researchers in the topic

Comments: Note that we have 2 talks this week, one at 10 am (E. Cliff), another one at 11 am (A. Adem).

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CRM - Séminaire du CIRGET / Géométrie et Topologie

Series comments: Hybrid seminar of geometry and topology. Laboratory : CIRGET - www.cirget.uqam.ca The homepage of the seminar is www.cirget.uqam.ca/fr/seminaires.html

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