Volume 41, Issue 5
مرور بر اساس
ارسال های اخیر
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On a class of Kirchhoff type systems with nonlinear boundary condition
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)A class of Kirchhoff type systems with nonlinear boundary conditions considered in this paper. By using the method of Nehari manifold, it is proved that the system possesses two nontrivial nonnegative ...
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A relative extending module and torsion precovers
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)We first characterize $tau$-complemented modules with relative (pre)-covers. We also introduce an extending module relative to $tau$-pure submodules on a hereditary torsion theory $tau$ and give its relationship with ...
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A uniform approximation method to solve absolute value equation
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)In this paper, we propose a parametric uniform approximation method to solve NP-hard absolute value equations. For this, we uniformly approximate absolute value in such a way that the nonsmooth absolute value equation ...
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Approximation of an additive mapping in various normed spaces
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)In this paper, using the fixed point and direct methods, we prove the generalized Hyers-Ulam-Rassias stability of the following Cauchy-Jensen additive functional equation: begin{equation}label{main}
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Hypersurfaces of a Sasakian space form with recurrent shape operator
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)Let $(M^{2n},g)$ be a real hypersurface with recurrent shapeoperator and tangent to the structure vector field $xi$ of the Sasakian space form$widetilde{M}(c)$. We show that if the shape operator $A$ of $M$ ...
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On properties of dependent general progressively type-II censored order statistics
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)In the literature of life-testing, general progressive censoring has been studied extensively. But, all the results have been developed under the key assumption that the units undertest are independently distributed. ...
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Automatic continuity of surjective $n$-homomorphisms on Banach algebras
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)In this paper, we show that every surjective $n$-homomorphism ($n$-anti-homomorphism) from a Banach algebra $A$ into a semisimple Banach algebra $B$ is continuous.
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On Sandwich theorems for certain classes of analytic functions
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)The purpose of this present paper is to derive some subordination and superordination results for certain analytic functions in the open unit disk. Relevant connections of the results, which are presented in the ...
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Some approximate fixed point results for proximinal valued $beta$-contractive multifunctions
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)In this paper, we prove some approximate fixed point results for proximinal valued $beta$-contractive multifunctions on metric spaces. We show that our results generalize some old fixed point results in the literature.
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Random approximation of a general symmetric equation
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)In this paper, we prove the Hyers-Ulam stability of the symmetric functionalequation $f(ph_1(x,y))=ph_2(f(x), f(y))$ in random normed spaces. As a consequence, weobtain some random stability results in the sense ...
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A note on critical point and blow-up rates for singular and degenerate parabolic equations
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)In this paper, we consider singular and degenerate parabolic equations$$u_t =(x^alpha u_x)_x +u^m (x_0,t)v^{n} (x_0,t),quadv_t =(x^beta v_x)_x +u^q (x_0,t)v^{p} (x_0,t),$$ in $(0,a)times (0,T)$, subject ...
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New conditions on ground state solutions for Hamiltonian elliptic systems with gradient terms
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)This paper is concerned with the following elliptic system:$$ left{ begin{array}{ll} -triangle u + b(x)nabla u + V(x)u=g(x, v), -triangle v - b(x)nabla v + V(x)v=f(x, u), end{array}
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Entire functions sharing a small entire function with their difference operators
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)In this paper, we mainly investigate the uniqueness of the entire function sharing a small entire function with its high difference operators. We obtain one results, which can give a negative answer to an ...
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Some concavity properties for general integral operators
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)Let $C_0(alpha)$ denote the class of concave univalent functions defined in the open unit disk $mathbb{D}$. Each function $f in C_{0}(alpha)$ maps the unit disk $mathbb{D}$ onto the complement of an unbounded convex set. ...
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Zero sets in pointfree topology and strongly $z$-ideals
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)In this paper a particular case of z-ideals, called strongly z-ideal, is defined by introducing zero sets in pointfree topology. We study strongly z-ideals, their relation with z-ideals and the role of spatiality in this ...
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Bulletin of the Iranian Mathematical Society
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)
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The stability of the solution of an inverse spectral problem with a singularity
(Springer and the Iranian Mathematical Society (IMS), 2015-10-01)This paper deals with the singular Sturm-Liouville expressions $ ell y = -y''+q(x)y=lambda y $ on a finite interval, where the potential function $q$ is real and has a singularity ...
