Volume 08, Issue 03
مرور بر اساس
ارسال های اخیر
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2n-Weak module amenability of semigroup algebras
(Central Tehran Branch, Islamic Azad University, 2019-08-01)Let $S$ be an inverse semigroup with the set of idempotents $E$. We prove that the semigroup algebra $ell^{1}(S)$ is always $2n$-weakly module amenable as an $ell^{1}(E)$-module, for any $nin mathbb{N}$, where ...
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On the square root of quadratic matrices
(Central Tehran Branch, Islamic Azad University, 2019-08-01)Here we present a new approach to calculating the square root of a quadratic matrix. Actually, the purpose of this article is to show how the Cayley-Hamilton theorem may be used to determine an explicit formula for all the ...
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Invariant elements in the dual Steenrod algebra
(Central Tehran Branch, Islamic Azad University, 2019-08-01)In this paper, we investigate the invariant elements of the dual mod $p$ Steenrod subalgebra ${mathcal{A}_p}^*$ under the conjugation map $chi$ and give bounds on the dimensions of $(chi-1)({mathcal{A}_p}^*)_d$, where ...
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Application of DJ method to Ito stochastic differential equations
(Central Tehran Branch, Islamic Azad University, 2019-08-01)This paper develops iterative method described by [V. Daftardar-Gejji, H. Jafari, An iterative method for solving nonlinear functional equations, J. Math. Anal. Appl. 316 (2006) 753-763] to solve Ito ...
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A new subclass of harmonic mappings with positive coefficients
(Central Tehran Branch, Islamic Azad University, 2019-08-01)Complex-valued harmonic functions that are univalent and sense-preserving in the open unit disk $U$ can be written as form $f =h+bar{g}$, where $h$ and $g$ are analytic in $U$. In this paper, we introduce the ...
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$(F,varphi ,alpha )_{s}$-contractions in $b$-metric spaces and applications
(Central Tehran Branch, Islamic Azad University, 2019-08-01)In this paper, we introduce more general contractions called $varphi $-fixed point point for $(F,varphi ,alpha )_{s}$ and $(F,varphi ,alpha )_{s}$-weak contractions. We prove the existence and uniqueness of ...
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Ring endomorphisms with nil-shifting property
(Central Tehran Branch, Islamic Azad University, 2019-08-01)Cohn called a ring $R$ is reversible if whenever $ab = 0,$ then $ba = 0$ for $a,bin R.$ The reversible property is an important role in noncommutative ring theory. Recently, Abdul-Jabbar et al. studied the reversible ...
