On Ext-indices of ring extensions

Saeed Nasseh, Yuji Yoshino

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


In this paper, we investigate the finiteness of Ext-indices for certain ring extensions. In this direction, we introduce some conjectures and discuss the relationships among them. We also prove these conjectures in some special cases. Furthermore, we prove that the trivial extension of an Artinian local ring by its residue class field is always of finite Ext-index, and prove a generalization of the Auslander-Reiten conjecture for this type of ring.

Original languageEnglish
Pages (from-to)1216-1223
Number of pages8
JournalJournal of Pure and Applied Algebra
Issue number7
Publication statusPublished - Jul 2009

ASJC Scopus subject areas

  • Algebra and Number Theory


Dive into the research topics of 'On Ext-indices of ring extensions'. Together they form a unique fingerprint.

Cite this