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Speaker:

Ian Leary
Affiliation:

University of Southampton
Date:

Mon, 13/05/2024 - 10:00 - 11:00
Location:

MPIM Lecture Hall Tom Brown and I gave a construction of non-finitely presented groups of type FP that is independent of the Bestvina-Brady argument but instead used graphical small cancellation. Our result required the construction of a 'Spectacular complex' - a 2-dimensional acyclic complex whose polygons have some small cancellation property. A new argument produces more examples including examples of larger cohomological dimension.

(Builds on joint work with Tom Brown)

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