Seminar
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| Location: | SLMath: Eisenbud Auditorium |
Keywords and Mathematics Subject Classification (MSC)
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Bestvina and Brady associated a group to each finite flag complex, as the kernel of a map from a right-angled Artin group to the infinite cyclic group. Using branched covers to make new CAT(0) cube complexes I associate an uncountable family of groups to each connected finite flag complex. I shall outline the construction, its properties and two results obtained this semester: the classification of subgroups of almost finitely presented groups and the existence of uncountably many quasi-isometry classes of groups of type FP (the latter joint with Robert Kropholler and Ignat Soroko).
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