Pooya Vahidi Ferdowsi

collaborators

3 papers

math.CO2019

Quasi-Regular Sequences

Joshua Frisch, Wade Hann-Caruthers, Pooya Vahidi Ferdowsi

Let $Σ$ be a countable alphabet. For $r \geq 1$ , an infinite sequence $s$ with characters from $Σ$ is called $r$ -quasi-regular, if for each $σ \in Σ$ the ratio of the longest to short…

math.GR2018

Non-virtually nilpotent groups have infinite conjugacy class quotients

Joshua Frisch, Pooya Vahidi Ferdowsi

We offer in this note a self-contained proof of the fact that a finitely generated group is not virtually nilpotent if and only if it has a quotient with the infinite conjugacy cla…

math.GR2018

Choquet-Deny groups and the infinite conjugacy class property

Joshua Frisch, Yair Hartman, Omer Tamuz +1

A countable discrete group $G$ is called Choquet-Deny if for every non-degenerate probability measure $μ$ on $G$ it holds that all bounded $μ$ -harmonic functions are constant. We s…