English

On rings whose finitely generated left ideals are left annihilators of an element

Rings and Algebras 2010-04-29 v2 Commutative Algebra

Abstract

An associative ring RR with identity is left pseudo-morphic if for every aa\inRR, there exists bb\inRR such that Ra=lR(b)Ra=l_R(b). If, in addition, lR(a)=Rbl_R(a)=Rb, then RR is called left morphic. RR is morphic if it is both left and right morphic. We characterize left pseudo-morphic rings; identify the cases a (left) pseudo morphic ring is (left) quasi-morphic, morphic, Quasi-Frobenius, von Neumann regular, etc.; correct two results in a book and a paper; and completely determine when the trivial extension of a commutative domain is morphic which positively answered a question in a paper.

Keywords

Cite

@article{arxiv.1002.3193,
  title  = {On rings whose finitely generated left ideals are left annihilators of an element},
  author = {Xiande Yang},
  journal= {arXiv preprint arXiv:1002.3193},
  year   = {2010}
}

Comments

20 pages, 4 figures. Comments are very welcome(email:xiande.yang@gmail.com). This is a revised version of Feb 2010 arxiv:1002.3193v1 which only contains section 4 of the present version.

R2 v1 2026-06-21T14:47:44.829Z