**Volume 10 (2021)**

**Volume 09 (2020)**

**Volume 08 (2019)**

**Volume 07 (2018)**

**Volume 06 (2017)**

**Volume 05 (2016)**

**Volume 04 (2015)**

**Volume 03 (2014)**

**Volume 02 (2013)**

**Volume 01 (2012)**

##### 1. Continuity of some mappings on a group via semi-regular topology

*Volume 10, Issue 03 , Summer 2021, Pages 179-185*

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**Abstract **

For a given topological space $(X, ~\Im)$, there is a coarser topology on $X$ which is called the semi-regular topology on $X$ (generated by regularly open subsets) and it is denoted by $\Im^{\delta}$. In this paper, we study the continuity of the group operation ...
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##### 2. An algebraic perspective on neutrosophic sets: fields and linear spaces

*Volume 10, Issue 03 , Summer 2021, Pages 187-198*

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**Abstract **

In this work, we intend to introduce and study another algebraic structure of single-valued neutrosophic sets called neutrosophic field as a continuation of our investigations on neutrosophic algebraic structures. For this goal, we define the concept of neutrosophic fields and observe some of their basic ...
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##### 3. A closure operator versus purity

*Volume 10, Issue 03 , Summer 2021, Pages 199-203*

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**Abstract **

Any notion of purity is normally defined in terms of solvability of some set of equations. To study mathematical notions, such as injectivity, tensor products, flatness, one needs to have some categorical and algebraic ...
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##### 4. Projective system of topological quasi modules

*Volume 10, Issue 03 , Summer 2021, Pages 205-216*

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**Abstract **

Quasi module is a new algebraic structure, based on module, which is composed of a semigroup structure and a partial order accompanied with an external ring multiplication. We proposed this structure in our paper \cite{qmod} while we were studying the hyperspace $ \com{M}{} ...
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##### 5. The moving frame method and invariant subspace under parametric group actions

*Volume 10, Issue 03 , Summer 2021, Pages 217-224*

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**Abstract **

For a given subspace as a solution space of a linear ODE, we define a special linear parametric group action and prolong it to the jet bundle. We determine these group parameters by moving frame method and prove that these group parameters are the first integrals of the given ...
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##### 6. The $n^{th}$ commutativity degree of semigroups

*Volume 10, Issue 03 , Summer 2021, Pages 225-233*

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**Abstract **

For a given positive integer $n$, the $n^{th}$ commutativity degree of a finite non-commutative semigroup $S$ is defined to be the probability of choosing a pair $(x,y)$ for $x, y \in S$ such that $x^n$ and $y$ commute in $S$. If for every ...
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##### 7. A class of (2m-1)-weakly amenable Banach algebras

*Volume 10, Issue 03 , Summer 2021, Pages 234-239*