Volume 42, Issue 6
مرور بر اساس
ارسال های اخیر
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PPF dependent fixed point theorems for multi-valued mappings in Banach spaces
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)We prove the existence of PPF dependent coincidence points for a pair of single-valued and multi-valued mappings satisfying generalized contractive conditions in Banach spaces. Furthermore, the PPF dependent fixed point ...
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Nonexistence and existence results for a 2$n$th-order $p$-Laplacian discrete Neumann boundary value problem
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)This paper is concerned with a 2nth-order p-Laplacian difference equation. By using the critical point method, we establish various sets of sufficient conditions for the nonexistence and existence of solutions for ...
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A remark on Remainders of homogeneous spaces in some compactifications
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)We prove that a remainder $Y$ of a non-locally compact rectifiable space $X$ is locally a $p$-space if and only if either $X$ is a Lindel"{o}f $p$-space or $X$ is $sigma$-compact, which improves two results by ...
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Parabolic Marcinkiewicz integrals on product spaces
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)In this paper, we study the $L^p$ ($1
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Spacetimes admitting quasi-conformal curvature tensor
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)The object of the present paper is to study spacetimes admitting quasi-conformal curvature tensor. At first we prove that a quasi-conformally flat spacetime is Einstein and hence it is of constant curvature and the ...
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Multi-valued operators with respect $wt$-distance on metric type spaces
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)Recently, Hussain et al., discussed the concept of $wt$-distance on a metric type space. In this paper, we prove some fixed point theorems for classes of contractive type multi-valued operators, by using ...
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Multiplicity result to some Kirchhoff-type biharmonic equation involving exponential growth conditions
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)In this paper, we prove a multiplicity result for some biharmonic elliptic equation of Kirchhoff type and involving nonlinearities with critical exponential growth at infinity. Using some variational arguments and ...
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Positive solutions of $n$th-order $m$-point boundary value problems
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)In this paper, by using four functionals fixed point theorem, we obtain sufficient conditions for the existence of at least one positive solution of an $n$th-order $m$-point boundary value problem. As an application, ...
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On generalizations of semiperfect and perfect rings
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)We call a ring $R$ right generalized semiperfect if every simple right $R$-module is an epimorphic image of a flat right $R$-module with small kernel, that is, every simple right $R$-module has a flat $B$-cover. We ...
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Differential subordination and superordination results associated with the Wright function
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)An operator associated with the Wright function is introduced in the open unit disk. Differential subordination and superordination results associated with this operator are obtained by investigating appropriate classes ...
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Existence and nonexistence of positive solution for sixth-order boundary value problems
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)In this paper, we formulate the sixth-order boundary value problem as Fredholm integral equation by finding Green's function and obtain the sufficient conditions for existence and multiplicity of positive solution for ...
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On time-dependent neutral stochastic evolution equations with a fractional Brownian motion and infinite delays
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)In this paper, we consider a class of time-dependent neutral stochastic evolution equations with the infinite delay and a fractional Brownian motion in a Hilbert space. We establish the existence and uniqueness of mild ...
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Growth of meromorphic solutions for complex difference equations of Malmquist type
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)In this paper, we give some necessary conditions for a complex difference equation of Malmquist type $$sum^n_{j=1}f(z+c_j)=frac{P(f(z))}{Q(f(z))},$$ where $n(in{mathbb{N}})geq{2}$, and $P(f(z))$ and ...
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Global convergence of an inexact interior-point method for convex quadratic symmetric cone programming
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)In this paper, we propose a feasible interior-point method for convex quadratic programming over symmetric cones. The proposed algorithm relaxes the accuracy requirements in the solution of the Newton equation ...
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Co-centralizing generalized derivations acting on multilinear polynomials in prime rings
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)Let $R$ be a noncommutative prime ring of characteristic different from $2$, $U$ the Utumi quotient ring of $R$, $C$ $(=Z(U))$ the extended centroid of $R$. Let $0neq ain R$ and $f(x_1,ldots,x_n)$ a multilinear ...
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Simple groups with the same prime graph as $D_n(q)$
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)Vasil'ev posed Problem 16.26 in [The Kourovka Notebook: Unsolved Problems in Group Theory, 16th ed.,Sobolev Inst. Math., Novosibirsk (2006).] as follows:Does there exist a positive integer $k$ such that there ...
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On natural homomorphisms of local cohomology modules
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)Let $M$ be a non-zero finitely generated module over a commutative Noetherian local ring $(R,mathfrak{m})$ with $dim_R(M)=t$. Let $I$ be an ideal of $R$ with $grade(I,M)=c$. In this article we will investigate several ...
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Quasilinear Schrödinger equations involving critical exponents in $mathbb{textbf{R}}^2$
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)We study the existence of soliton solutions for a class of quasilinear elliptic equation in $mathbb{textbf{R}}^2$ with critical exponential growth. This model has been proposed in the self-channeling of a high-power ...
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A remark on the means of the number of divisors
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)We obtain the asymptotic expansion of the sequence with general term $frac{A_n}{G_n}$, where $A_n$ and $G_n$ are the arithmetic and geometric means of the numbers $d(1),d(2),dots,d(n)$, with $d(n)$ denoting the number ...
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Bulletin of the Iranian Mathematical Society
(Springer and the Iranian Mathematical Society (IMS), 2016-12-01)
