Wednesday 26 July 2023
15:00–16:30*
Sala 804 "Ciprian Foias"

Alexandru Suciu (Northeastern University) — Lower central series and Alexander invariants in group extensions

I will present a study of the lower central series, the Alexander invariants, and the cohomology jump loci of groups occurring as extensions with trivial monodromy in first homology with appropriate coefficients. I will illustrate these concepts with examples arising from the Bestvina-Brady groups associated to right-angled Artin groups and with the Milnor fibrations of complements of hyperplane arrangements.

* Eastern European Time, i.e. UTC+2 in winter and UTC+3 in summer.