%0 Journal Article %T Automorphisms of abelian group extensions %A I. B. S. Passi %A Mahender Singh %A Manoj K. Yadav %J Mathematics %D 2009 %I arXiv %X Let $1 \to N \to G \to H \to 1$ be an abelian extension. The purpose of this paper is to study the problem of extending automorphisms of $N$ and lifting automorphisms of $H$ to certain automorphisms of $G$. %U http://arxiv.org/abs/0911.4250v2