English

Pseudo-Frobenius graded algebras with enough idempotents

Representation Theory 2014-12-23 v1

Abstract

We introduce and study the notion of pseudo-Frobenius graded algebra with enough idempotents, showing that it follows the pattern of the classical concept of pseudo-Frobenius (PF) and Quasi-Frobenius (QF) rings, in particular finite dimensional self-injective algebras, as studied by Nakayama, Morita, Faith, Tachikawa, etc. We show that such an algebra is characterized by the existence of a graded Nakayama form. Moreover, we prove that the pseudo-Frobenius property is preserved and reflected by covering functors, a fact that makes the concept useful in Representation Theory.

Keywords

Cite

@article{arxiv.1412.6917,
  title  = {Pseudo-Frobenius graded algebras with enough idempotents},
  author = {Estefanía Andreu Juan and Manuel Saorín},
  journal= {arXiv preprint arXiv:1412.6917},
  year   = {2014}
}

Comments

24 pages. arXiv admin note: substantial text overlap with arXiv:1304.0586