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Groups of type FP via graphical small cancellation II: relators with symmetry

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Speaker: 
Ian Leary
Zugehörigkeit: 
University of Southampton
Datum: 
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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