2 papers
math.GR2024
Actions of frieze groups on inverse limits of polynomial rings
Elitza Hristova, Bogdan Stankov
In the spirit of the action of the symmetric group on the ring of polynomials in variables, we consider the actions of the seven frieze groups on rings of formal infinite linea…
math.GR2022
Coulhon Saloff-Coste isoperimetric inequalities for finitely generated groups
Christophe Pittet, Bogdan Stankov
We prove an inequality, valid on any finitely generated group with a fixed finite symmetric generating set, involving the growth of successive balls, and the average length of an e…