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Mathematics & Statistics
Colloquium Archive

# Colloquia — Fall 2017

## Friday, November 17, 2017

Title
Speaker

Time
Place

TBA
Ian McQuillan
Department of Computer Science
3:00pm-4:00pm
CMC 130
Nataša Jonoska

Abstract

TBA

## Friday, October 13, 2017

Title
Speaker

Time
Place

TBA
Bei Wang
Scientific Computing and Imaging Institute
University of Utah
3:00pm-4:00pm
CMC 130
Masahiko Saito

Abstract

TBA

## Friday, October 6, 2017

Title
Speaker

Time
Place

On exceptional sets of some operator sequences
Grigori Karagulyan
Institute of Mathematics
National Academy of Sciences of Armenia
3:00pm-4:00pm
CMC 130
Arthur Danielyan

Abstract

TBA

## Friday, September 1, 2017

Title
Speaker

Time
Place
The topic of this lecture is a group functor which we introduced in 1980. Precisely, given a group $$G$$ and an isomorphic copy of it $$G^\psi$$ where $$\psi$$ is the isomorphism, we defined $$\chi(G)=\langle G,G^\psi\mid gg^\psi=g^\psi g\text{ for all }g\in G\rangle.$$ It was shown that the group $$\chi(G)$$ has a section isomorphic to the second homology group $$H_2(G,ℤ)$$. The functor $$\chi$$ preserves a number of classes of groups such as: finite $$\pi$$-groups ($$\pi$$ a set of primes); finite nilpotent groups; solvable groups; nilpotent groups; polycyclic-by-finite groups. Recently, Bridson and Kochloukova added to this list the important class of finitely presented groups.