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Andres Mejia (U Penn): An Equivariant Calculus of Embeddings

Event Type
Seminar/Symposium
Sponsor
UIUC Math Department
Location
Altgeld 241
Date
Nov 5, 2024   11:00 am  
Views
81
Originating Calendar
Topology Seminar

A classical problem in manifold topology is to understand when two given embeddings are isotopic. The desire to understand when such isotopies are unique leads one to instead consider the space of embeddings between two smooth manifolds. Goodwillie and Weiss provide an approach by trying to study the values of embeddings in small neighborhoods of configuration spaces for a manifold. We extend these methods to the setting of manifolds with an action by a finite group. In particular, we study the space of equivariant embeddings by scanning along an appropriate notion of $G$-disks. Leveraging the work of Bierstone in equivariant immersion theory, we show that the first approximation to equivariant embeddings is the space of equivariant immersions. Moreover, we show that the layers of our embedding tower can be analyzed as fibrations over a product of nonequivariant configuration spaces.

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