Journal of Lanzhou University of Technology ›› 2022, Vol. 48 ›› Issue (3): 169-172.

• Scientific • Previous Articles    

Dual τ-Rickart modules

LI Yu-yan, HE Dong-lin   

  1. College of Mathematics and Information Sciences, Longnan Teachers College, Longnan 742500, China
  • Received:2020-12-24 Online:2022-06-28 Published:2022-10-09

Abstract: Let τ=(T,F) be a hereditary torsion theory, the concept of dual τ-Rickart module is introduced. A module M is called dual τ-Rickart if π-1τ(Im ψ- ) =Im ψ+τ(M) is a direct summand of M for every ψ∈End(M).Properties of dual τ-Rickart module are studied, some equivalent characterizations to be dual τ-Rickart are given. Moreover, it is proved that M isτ-Rickart and M/(τ(M)) has C2 condition if and only if M is dual τ-Rickart and M/(τ(M)) has D2 condition.

Key words: dual τ-Rickart module, τ-Rickart module, direct summand

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