AU - Amini, M. AU - Hassani, F. TI - Copresented Dimension of Modules PT - JOURNAL ARTICLE TA - IJMSI JN - IJMSI VO - 14 VI - 2 IP - 2 4099 - http://ijmsi.ir/article-1-1036-en.html 4100 - http://ijmsi.ir/article-1-1036-en.pdf SO - IJMSI 2 ABĀ  - In this paper, a new homological dimension of modules, copresented dimension, is defined. We study some basic properties of this homological dimension. Some ring extensions are considered, too. For instance, we prove that if $Sgeq R$ is a finite normalizing extension and $S_R$ is a projective module, then for each right $S$-module $M_S$, the copresented dimension of $M_S$ does not exceed the copresented dimension of $Hom_{R}(S,M)$. CP - IRAN IN - Department of Mathematics, Payam Noor University LG - eng PB - IJMSI PG - 139 PT - Research paper YR - 2019