Volume no :6, Issue no: 1, -2 September and December 2011

Journal of Algebra, Number Theory: Advances and Applications

BEAR-INVARIANT AND COVERING GROUP WITH RESPECT TO NILPOTENT VARIETY

Author's: SEYYED MOSTAFA TAHERI and MEHRDAD PARVIZIAN
Pages: [19] - [28]
Received Date: September 29, 2011
Submitted by:

Abstract

A group is said to be an covering group of G, if has a subgroup A such that and Let be a free presentation of a group G, we prove that is a homomorphic image of We also extends theorems due to Gaschutz and Ganea.

Keywords

variety, nilpotent, verbal, Bear-invariant.