Crossed product Hom-Hopf algebras and lazy 2-cocycle

Abstract

Let $(H,\a)$ be a Hom-Hopf algebra and $(A,\b)$ be a Hom-algebra. In this paper we will construct the Hom-crossed product $(A\#_σH,\bø\a)$, and prove that the extension $A\subseteq A{\#}_{\sigma }H$ is actually a Hom-type cleft extension and vice versa. Then we will give the necessary and sufficient conditions to make $(A\#_σH,\bø\a)$ a Hom-Hopf algebra. Finally we will study the lazy 2-cocycle on $(H,\a)$.

arXiv admin note: text overlap with arXiv:1405.7528

References in corpus (3)

• Deformations of Lie Algebras using $\sigma$-derivations
• Hom-bialgebras and comodule Hom-algebras
• Hom-quantum groups I: quasi-triangular Hom-bialgebras