“Wells' sequence for
group extensions, Part II”
SEMRA KAPTANOĞLU
(METU)
Abstract: For an extension $G$ of a group $Q$ by another group $N$ together with a coupling $\chi$, a homomorphism from $Q$ to the group of automorphisms of $N$, there is an exact sequence due to Charles Wells, involving derivations from $Q$ to the center of $N$, automorphisms of $G$ which restrict to automorphisms of $N$, compatible automorphism pairs coming from the automorphisms of $N$ and $Q$, and $H2(Q, Z(N)$. Construction of the Wells' sequence and some applications of the sequence will be given.
Date :
Time :
Place: Seminar Room SA-141