Dergiler / Turkish Journal of Mathematics / 2011 / Cilt: 35 - Sayı: 4

Weak-projective dimensions

Sayfa
627–636
DOI
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Özet

In this paper, the notions of weak-projective modules and weak-projective dimension over commutative domain R are given. It is shown that over semisimple rings with weak global dimension 1, these modules are equivalent to weak-injective modules. The weak-projective dimension measures how far away a domain is from being a Prüfer domain. Several properties of these modules are also presented.

Abstract

In this paper, the notions of weak-projective modules and weak-projective dimension over commutative domain R are given. It is shown that over semisimple rings with weak global dimension 1, these modules are equivalent to weak-injective modules. The weak-projective dimension measures how far away a domain is from being a Prüfer domain. Several properties of these modules are also presented.

Anahtar kelimeler: Semi-Dedekind domain; Weak-injective modules; Weak- projective dimension, projective modules; Prüfer domain