Algebra seminar in Lincoln: talk by Dr Daniel Woodhouse

Charlotte Scott Centre for Algebra

On Wednesday the 26th of February 2020, Dr Daniel Woodhouse (University of Oxford) visited the Charlotte Scott Centre for Algebra and gave a talk “Leighton’s graph covering theorem”.

Abstract: Leighton’s theorem for graphs states that any pair of finite graphs with common universal covers have a common finite cover. Equivalently, this says that any pair of uniform lattices in the automorphism groups of a tree can be commensurated. I will discuss the significance of this theorem, recent generalizations, and how it can be applied in geometric group theory.

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© School of Mathematics and Physics, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS, United Kingdom
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