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Weak Rickart and dual weak Rickart objects in abelian categories: transfer via functors

  • Babes-Bolyai University

Research output: Contribution to journalArticlepeer-review

Abstract

Weak relative Rickart objects generalize relative Rickart objects in abelian categories. We study how such a property is preserved or reflected by fully faithful functors and adjoint pairs of functors. Various consequences are obtained for (co)reflective subcategories, adjoint triples of functors and endomorphism rings of modules. In particular, for a right H-module M with endomorphism ring S, we prove that if M is a weak self-Rickart right R-module, then 5 is a weak self-Rickart right S-module, while the converse holds provided M is a flat left S-module or M is a k-local-retractable right R-module.

Original languageEnglish
Pages (from-to)189-207
Number of pages19
JournalBulletin Mathematique de la Societe des Sciences Mathematiques de Roumanie
Volume66
Issue number2
Publication statusPublished - 2023

Keywords

  • (dual) weak Rickart object
  • (graded) module
  • Abelian category
  • comodule
  • endomorphism ring
  • Grothendieck category

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