University of Mohaghegh Ardabili Journal of Hyperstructures 2251-8436 1 1 2012 06 01 Strongly s-dense monomorphisms 14 26 2537 10.22098/jhs.2012.2537 EN H. R Barzega Young Researchers club, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran. Journal Article 2012 03 22 Let M be a class of (mono)morphisms in a category A. To study mathematical notions, such as injectivity, tensor products and flatness, one needs to have some categorical and algebraic information about the pair (A,M). In this paper we take A to be the category Act-S of S-acts, for a semigroup S, and Msd to be the class of strongly s-dense monomorphisms and study the categorical properties, such as limits and colimits, of this class. https://jhs.uma.ac.ir/article_2537_9ce8804bdd9e5d2f9553aa445edb4e1a.pdf