On Ext-indices of ring extensions

Saeed Nasseh, Yuji Yoshino

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

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
Volume213
Issue number7
DOIs
Publication statusPublished - Jul 2009

ASJC Scopus subject areas

  • Algebra and Number Theory

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