Expanders via actions on manifolds

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• Federico Vigolo (Oxford)
• Thursday 04 October 2018, 15:00-16:00
• MR13.

If you have a question about this talk, please contact Ben Morley.

A family of expanders is a sequence of finite graphs that are uniformly sparse and yet highly connected. In this talk I will show how to construct expanders by approximating actions on manifolds that are `mixing enough’. Time permitting, I will also illustrate some peculiar aspects of the geometry of the expanders thus obtained.

This talk is part of the Junior Geometry Seminar series.

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