Mercoledì 30 Aprile 2025 alle ore 11:30, nel quadro del ciclo di seminari Al@Bicocca, Simone Blumer (Università di Vienna) terrà il seguente intervento
Titolo: Subgroups of Bestvina-Brady groups
Abstract: Right-angled Artin groups (RAAGs) form a mysterious and rich class of groups that interpolates between the free groups and the free abelian groups. They are defined by a given graph, with generators corresponding to its vertices and commutator relations imposed for adjacent vertices. Unlike the case of free (abelian) groups, a subgroup of a RAAG may not be RAAG itself. In this direction, in 1987, Carl Droms characterised the graphs for which every subgroup of the associated RAAG is itself a RAAG. In this talk we will deal with a similar problem for certain normal subgroups of RAAGs, called Bestvina-Brady groups, which have been extensively studied over the last 20 years, as they provide counterexamples to several group-theoretic problems.
Informazioni per partecipare
Il seminario si terrà in Aula 3014 (3° Piano) - Edificio U5, Università degli Studi di Milano-Bicocca e sarà possibile partecipare anche online da questo link
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