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05

November

Algebra Seminar "Virtual retraction properties in groups”, by Jon Merladet Uriguen (University of Southampton)

Tid: 2024-11-05 13:30 till 14:30 Seminarium

Title: Virtual retraction properties in groups

Abstract: In this talk I will give an overview of retractions in groups. Given a group G, we say that a subgroup H is a virtual retract of G when H is a retract of a finite-index subgroup of G. If all cyclic/f.g subgroups of G are virtual retracts, we say that G has (LR)/(VRC).

Subgroups being virtual retracts may tell us if the group is residually finite, LERF, or how do subgroups embed on the whole group. I will discuss some motivations, and then expand on some extension problems: If G has (LR)/(VRC), what about its quotients? If a quotient of G has (LR)/(VRC), what about G? If G has (LR), what about wreath products of G with finite groups?



Om händelsen
Tid: 2024-11-05 13:30 till 14:30

Plats
MH:228

Kontakt
anitha [dot] thillaisundaram [at] math [dot] lu [dot] se

Sidansvarig: webbansvarig@math.lu.se | 2017-05-23