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Geometry-Topology Seminar

Thursday, October 13, 2022 - 5:15pm

Timothy Buttsworth

University of Queensland and University of Pennsylvania


University of Pennsylvania


The construction and classification of ancient solutions to the Ricci flow is a popular subject in geometric analysis which has arisen out of the need to provide useful models of finite-time singularities of Ricci flow. In this talk, I will discuss classical examples of ancient Ricci flows on spheres which are rotationally-invariant, as well as some more recent constructions of ancient flows on spheres which are invariant under a product of two orthogonal groups.