**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*

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**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 ...
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##### 2. SOME REMARKS ON GENERALIZATIONS OF MULTIPLICATIVELY CLOSED SUBSETS

*Volume 4, Issue 1 , Summer and Autumn 2016, Pages 15-27*

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**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 ...
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##### 3. ON FINITE GROUPS IN WHICH SS-SEMIPERMUTABILITY IS A TRANSITIVE RELATION

*Volume 4, Issue 1 , Summer and Autumn 2016, Pages 29-36*

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**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 ...
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##### 4. 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*

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**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 ...
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##### 5. STRONGLY DUO AND CO-MULTIPLICATION MODULES

*Volume 4, Issue 1 , Summer and Autumn 2016, Pages 53-64*

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**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 ...
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##### 6. SIGNED ROMAN DOMINATION NUMBER AND JOIN OF GRAPHS

*Volume 4, Issue 1 , Summer and Autumn 2016, Pages 65-77*

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**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.
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##### 7. ARTINIANNESS OF COMPOSED LOCAL COHOMOLOGY MODULES

*Volume 4, Issue 1 , Summer and Autumn 2016, Pages 79-84*