[Alta-Logic] Peripatetic talk: Wed. 11:00am, 19th Oct. , ICT 616

[Robin Cockett]

Time: 11:00 am Wed. (19th Oct. 2001)

Place: ICT 616

Speaker: Peter Zvengrowski

Title: Goursat II

Abstract:
Goursat's Lemma goes back to 1889 and gives a method for determining the subgroups of the direct 
product AxB of two groups. This past spring a talk about Goursat's Lemma was given by myself in 
this seminar, and a few interesting further questions were mentioned. Since then, in joint work with 
Kristine Bauer and Debasis Sen, one of those questions has been solved, namely generalizing the 
lemma from direct products of two groups to direct products of a finite number of groups (or rings, 
modules, etc.), and this will be the main subject of the present talk. Some of the history will also be 
updated, including a strong Canadian connexion.