Volume 43, Issue 1
مرور بر اساس
ارسال های اخیر
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Some iterative method for finding a common zero of a finite family of accretive operators in Banach spaces
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)The purpose of this paper is to introduce a new mapping for a finite family of accretive operators and introduce an iterative algorithm for finding a common zero of a finite family of accretive operators in a real ...
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On the diameter of the commuting graph of the full matrix ring over the real numbers
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)In a recent paper C. Miguel proved that the diameter of the commuting graph of the matrix ring $mathrm{M}_n(mathbb{R})$ is equal to $4$ if either $n=3$ or $ngeq5$. But the case $n=4$ remained open, since the diameter ...
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Infinitely many solutions for a class of $p$-biharmonic equation in $mathbb{R}^N$
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)Using variational arguments, we prove the existence of infinitely many solutions to a class of $p$-biharmonic equation in $mathbb{R}^N$. The existence of nontrivial solution is established under a new set ...
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Existence of solutions for a variational inequality on the half-line
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)In this paper we study the existence of nontrivial solutions for a variational inequality on the half-line. Our approach is based on the non-smooth critical point theory for Szulkin-type functionals.
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On semi-$Pi$-property of subgroups of finite group
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)Let $G$ be a group and $H$ a subgroup of $G$. $H$ is said to have semi-$Pi$-property in $G$ if there is a subgroup $T$ of $G$ such that $G=HT$ and $Hcap T$ has $Pi$-property in $T$. In this paper, investigating on ...
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$PI$-extending modules via nontrivial complex bundles and Abelian endomorphism rings
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)A module is said to be $PI$-extending provided that every projection invariant submodule is essential in a direct summand of the module. In this paper, we focus on direct summands and indecomposable decompositions of ...
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Positive solutions for asymptotically periodic Kirchhoff-type equations with critical growth
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)In this paper, we consider the following Kirchhoff-type equations: $-left(a+bint_{mathbb{R}^{3}}|nabla u|^{2}right)Delta u+V(x) u=lambda$ $f(x,u)+u^{5}, quad mbox{in }mathbb{R}^{3},$ $u(x)>0, quad ...
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Embedding normed linear spaces into $C(X)$
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)It is well known that every (real or complex) normed linear space $L$ is isometrically embeddable into $C(X)$ for some compact Hausdorff space $X$. Here $X$ is the closed unit ball of $L^*$ (the set of all continuous ...
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Some compact generalization of inequalities for polynomials with prescribed zeros
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)Let $p(z)=z^s h(z)$ where $h(z)$ is a polynomial of degree at most $n-s$ having all its zeros in $|z|geq k$ or in $|z|leq k$. In this paper we obtain some new results about the dependence of $|p(Rz)|$ on $|p(rz)| $ ...
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Finite $p$-groups and centralizers of non-cyclic abelian subgroups
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)A $p$-group $G$ is called a $mathcal{CAC}$-$p$-group if $C_G(H)/H$ is cyclic for every non-cyclic abelian subgroup $H$ in $G$ with $Hnleq Z(G)$. In this paper, we give a complete classification of finite ...
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Local tracial C*-algebras
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)Let $Omega$ be a class of unital $C^*$-algebras. We introduce the notion of a local tracial $Omega$-algebra. Let $A$ be an $alpha$-simple unital local tracial $Omega$-algebra. Suppose that $alpha:Gto $Aut($A$) is ...
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Application of Hopf's lemma on contact CR-warped product submanifolds of a nearly Kenmotsu manifold
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)In this paper we consider contact CR-warped product submanifolds of the type $M = N_Ttimes_f N_perp$, of a nearly Kenmotsu generalized Sasakian space form $bar M(f_1, f_2, f_3)$ and by use of Hopf's Lemma we show that ...
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Clifford-Fischer theory applied to a group of the form $2_{-}^{1+6}{:}((3^{1+2}{:}8){:}2)$
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)In our paper [A. B. M. Basheer and J. Moori, On a group of the form $2^{10}{:}(U_{5}(2){:}2)$] we calculated the inertia factors, Fischer matrices and the ordinary character table of the split extension $ ...
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On dimension of a special subalgebra of derivations of nilpotent Lie algebras
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)Let $L$ be a Lie algebra, $mathrm{Der}(L)$ be the set of all derivations of $L$ and $mathrm{Der}_c(L)$ denote the set of all derivations $alphainmathrm{Der}(L)$ for which $alpha(x)in [x,L]:={[x,y]vert yin L}$ for all ...
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Construction of measures of noncompactness of $C^k(Omega)$ and $C^k_0$ and their application to functional integral-differential equations
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)In this paper, first, we investigate the construction of compact sets of $ C^k$ and $ C_0^k$ by proving ``$C^k, C_0^k-version$" of Arzel`{a}-Ascoli theorem, and then introduce new measures of noncompactness ...
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Some lower bounds for the $L$-intersection number of graphs
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)For a set of non-negative integers~$L$, the $L$-intersection number of a graph is the smallest number~$l$ for which there is an assignment of subsets $A_v subseteq {1,dots, l}$ to vertices $v$, such that every two ...
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Structure of finite wavelet frames over prime fields
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)This article presents a systematic study for structure of finite wavelet frames over prime fields. Let $p$ be a positive prime integer and $mathbb{W}_p$ be the finite wavelet group over the prime field $mathbb{Z}_p$. ...
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$varphi$-Connes amenability of dual Banach algebras
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)Generalizing the notion of character amenability for Banach algebras, we study the concept of $varphi$-Connes amenability of a dual Banach algebra $mathcal{A}$ with predual $mathcal{A}_*$, where $varphi$ is a ...
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The associated measure on locally compact cocommutative KPC-hypergroups
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)We study harmonic analysis on cocommutative KPC-hyper-groups, which is a generalization of DJS-hypergroups, introduced by Kalyuzhnyi, Podkolzin and Chapovsky. We prove that there is a relationship between the ...
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Modules of the toroidal Lie algebra $widehat{widehat{mathfrak{sl}}}_{2}$
(Springer and the Iranian Mathematical Society (IMS), 2017-02-01)Highest weight modules of the double affine Lie algebra $widehat{widehat{mathfrak{sl}}}_{2}$ are studied under a new triangular decomposition. Singular vectors of Verma modules are determined using a similar condition ...
