Volume 10 (2022-2023)
Volume 9 (2021-2022)
Volume 8 (2020-2021)
Volume 7 (2019-2020)
Volume 6 (2018-2019)
Volume 5 (2017-2018)
Volume 4 (2016-2017)
Volume 3 (2015-2016)
Volume 2 (2014-2015)
Volume 1 (2013-2014)
1. ON RELATIVE CENTRAL EXTENSIONS AND COVERING PAIRS
Volume 4, Issue 1 , Summer and Autumn 2016, Pages 1-13
Abstract
Let (G;N) be a pair of groups. In this article, first we con-struct a relative central extension for the pair (G;N) such that specialtypes of covering pair of (G;N) are homomorphic image of it. Second, weshow that every perfect pair admits at least one covering pair. Finally,among extending some properties ... Read More2. SOME REMARKS ON GENERALIZATIONS OF MULTIPLICATIVELY CLOSED SUBSETS
Volume 4, Issue 1 , Summer and Autumn 2016, Pages 15-27
Abstract
Let R be a commutative ring with identity and Mbe a unitary R-module. In this paper we generalize the conceptmultiplicatively closed subset of R and we study some propertiesof these genaralized subsets of M. Among the many results in thispaper, we generalize some well-known theorems about multiplicativelyclosed ... Read More3. ON FINITE GROUPS IN WHICH SS-SEMIPERMUTABILITY IS A TRANSITIVE RELATION
Volume 4, Issue 1 , Summer and Autumn 2016, Pages 29-36
Abstract
Let H be a subgroup of a finite group G. We say that H is SS-semipermutable in Gif H has a supplement K in G such that H permutes with every Sylow subgroup X of Kwith (jXj; jHj) = 1. In this paper, the Structure of SS-semipermutable subgroups, and finitegroups in which SS-semipermutability is a transitive ... Read More4. ON COMPOSITION FACTORS OF A GROUP WITH THE SAME PRIME GRAPH AS Ln(5)
Volume 4, Issue 1 , Summer and Autumn 2016, Pages 37-51
Abstract
The prime graph of a finite group $G$ is denoted by$ga(G)$. A nonabelian simple group $G$ is called quasirecognizable by primegraph, if for every finite group $H$, where $ga(H)=ga(G)$, thereexists a nonabelian composition factor of $H$ which is isomorphic to$G$. Until now, it is proved that some finite ... Read More5. STRONGLY DUO AND CO-MULTIPLICATION MODULES
Volume 4, Issue 1 , Summer and Autumn 2016, Pages 53-64
Abstract
Let R be a commutative ring. An R-module M is called co-multiplication provided that foreach submodule N of M there exists an ideal I of R such that N = (0 : I). In this paper weshow that co-multiplication modules are a generalization of strongly duo modules. Uniserialmodules of finite length and hence ... Read More6. SIGNED ROMAN DOMINATION NUMBER AND JOIN OF GRAPHS
Volume 4, Issue 1 , Summer and Autumn 2016, Pages 65-77
Abstract
In this paper we study the signed Roman dominationnumber of the join of graphs. Specially, we determine it for thejoin of cycles, wheels, fans and friendship graphs. Read More7. ARTINIANNESS OF COMPOSED LOCAL COHOMOLOGY MODULES
Volume 4, Issue 1 , Summer and Autumn 2016, Pages 79-84