9 citations · 12 across the 7 of their papers we have counts for
7 papers
On Hopfian(co-Hopfian) and Fitting S-acts (I)
Mohammad Roueentan, Roghaieh Khosravi
The main purpose of the present work is an investigation of the notions Hopfian (co-Hopfian) acts whose their surjective (injective) endomorphisms are isomorphisms. While we invest…
Chain conditions on (Rees) congruences of S-acts
Roghaieh Khosravi, Mohammad Roueentan
In this paper, we introduce (Rees) artinian S-acts as those acts that satisfy the descending chain condition on their (Rees) congruences. Then, we show that artinian S-acts are tho…
On Cogenerating and Finitely cogenerated S-acts
Roghaieh Khosravi, Xingliang Liang, Mohammad Roueentan
In this paper, cogenerating classes of -acts are introduced as those that can be used to cogenerate -acts in an appropriate sense. Next, finitely cogenerated -acts are int…
Samira Hosseinzadeh Alikhalaji, Mojtaba Sedaghatjoo and Mohammad Roueentan
Samira Hosseinzadeh Alikhalaji, Mojtaba Sedaghatjoo, Mohammad Roueentan
In this paper we investigate right uniform notion on some classes of semigroups. The main objective of this paper is realizing the structure of regular right uniform semigroups whi…
Co-uniform and hollow S-acts over monoids
Roghaieh Khosravi, Mohammad Roueentan
In this paper, we first introduce the notions of superfluous and coessential subacts. Then hollow and co-uniform S-acts are defined as the acts that all proper subacts are superflu…
Right subdirectly irreducible completely 0-simple semigroups and uniform acts over rectangular bands
Mojtaba Sedaghatjoo, Mohammad Roueentan
The aim of this paper is characterizing right subdirectly irreducible completely 0-simple semigroups. We prove that such semigroups are indeed groups with least nontrivial subgroup…
On uniform acts over semigroups
Mohammad Roueentan, Mojtaba Sedaghatjoo
The paper is devoted to the investigation of uniform notion for acts over semigroups perceived as an overclass of subdirectly irreducible acts. We establish conditions to fill the…