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Ian Hambleton: Finite Group Actions and Chain Complexes over the Orbit Category

Tid: To 2019-09-19 kl 10.15 - 12.00

Plats: Room 33, Building 5, Kräftriket, SU

Medverkande: Ian Hambleton, McMaster University

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We consider the existence of finite G-CW complexes X homotopy equivalent to spheres, for which the G-action on X has rank one isotropy. A variety of techniques are involved, including homological algebra over the orbit category. New infinite families of non-linear actions are constructed. This is joint work with Semra Pamuk and Ergun Yalcin.