Volume 41, Issue 1
مرور بر اساس
ارسال های اخیر
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Weighted composition operators on measurable differential form spaces
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)In this paper, we consider weighted composition operators betweenmeasurable differential forms and then some classic properties of these operators are characterized.
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The symmetric two-step P-stable nonlinear predictor-corrector methods for the numerical solution of second order initial value problems
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)In this paper, we propose a modification of the second order method introduced in [Q. Li and X. Y. Wu, A two-step explicit $P$-stable method for solving second order initial value problems, textit{Appl. ...
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Bounded approximate connes-amenability of dual Banach algebras
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)We study the notion of bounded approximate Connes-amenability for dual Banach algebras and characterize this type of algebras in terms of approximate diagonals. We show that bounded approximate
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Multiple solutions for a perturbed Navier boundary value problem involving the $p$-biharmonic
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)The aim of this article is to establish the existence of at least three solutions for a perturbed $p$-biharmonic equation depending on two real parameters. The approach is based on variational methods.
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On graded classical prime and graded prime submodules
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)Let $G$ be a group with identity $e.$ Let $R$ be a $G$-graded commutative ring and $M$ a graded $R$-module. In this paper, we introduce several results concerning graded classical prime submodules. ...
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$LG$-topology
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)In this paper, we introduce a new model of point free topology for point-set topology. We study the basic concepts in this structure and will find that it is naturally close to point-set topology.
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On meromorphic solutions of certain type of difference equations
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)We mainly discuss the existence of meromorphic (entire) solutions of certain type of non-linear difference equation of the form: $f(z)^m+P(z)f(z+c)^n=Q(z)$, which is a supplement of previous results ...
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Optimal asset control of the diffusion model under consideration of the time value of ruin
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)In this paper, we consider the optimal asset control of a financial company which can control its liquid reserves by paying dividends and by issuing new equity. We assume that the liquid surplus of the company in the ...
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On the oriented perfect path double cover conjecture
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)An oriented perfect path double cover (OPPDC) of a graph $G$ is a collection of directed paths in the symmetric orientation $G_s$ of $G$ such that each arc of $G_s$ lies in exactly ...
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Supercyclic tuples of the adjoint weighted composition operators on Hilbert spaces
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)We give some sufficient conditions under which the tuple of the adjoint of weighted composition operators $(C_{omega_1,varphi_1}^* , C_{omega_2,varphi_2}^*)$ on the Hilbert space $mathcal{H}$ of analytic functions is ...
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The category of monoid actions in Cpo
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)In this paper, some categorical properties of the category ${bf Cpo}_{{bf Act}text{-}S}$ of all {cpo $S$-acts}, cpo's equipped with actions of a monoid $S$ on them, and strict continuous action-preserving ...
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Almost multiplicative linear functionals and approximate spectrum
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)We define a new type of spectrum, called δ-approximate spectrum, of an element a in a complex unital Banach algebra A and show that the δ-approximate spectrum σ_δ (a) of a is compact. The relation between the δ-approximate ...
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The influence of S-embedded subgroups on the structure of finite groups
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)Let H be a subgroup of a group G. H is said to be S-embedded in G if G has a normal T such that HT is an S-permutable subgroup of G and H ∩ T ≤ H sG, where H denotes the subgroup generated by all those subgroups ...
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Strictly Kähler-Berwald manifolds with constant holomorphic sectional curvature
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)In this paper, the authors prove that a strictly Kähler-Berwald manifold with nonzero constant holomorphic sectional curvature must be a Kähler manifold.
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On the eigenvalues of normal edge-transitive Cayley graphs
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)A graph $Gamma$ is said to be vertex-transitive or edge- transitive if the automorphism group of $Gamma$ acts transitively on $V(Gamma)$ or $E(Gamma)$, respectively. Let $Gamma=Cay(G,S)$ be a Cayley ...
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Detection of a nontrivial element in the stable homotopy groups of spheres
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)Let $p$ be a prime with $pgeq 7$ and $q=2(p-1)$. In this paper we prove the existence of a nontrivial product of filtration $s+4$ in the stable homotopy groups of spheres. This nontrivial product ...
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Some properties of a class of polyhedral semigroups based upon the subword reversing method
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)In this paper a certain class of polyhedral semigroups which has a presentation $$ is examined. The completeness of the presentation and solvability of word problem of this class of ...
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The continuity of linear and sublinear correspondences defined on cones
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)In this paper, we investigate the continuity of linear and sublinear correspondences defined on cones in normed spaces. We also generalize some known results for sublinear correspondences.
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Iterative algorithm for the generalized $(P,Q)$-reflexive solution of a quaternion matrix equation with $j$-conjugate of the unknowns
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)In the present paper, we propose an iterative algorithm for solving the generalized $(P,Q)$-reflexive solution of the quaternion matrix equation $overset{u}{underset{l=1}{sum}}A_{l}XB_{l}+overset{v}
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Bulletin of the Iranian Mathematical Society
(Springer and the Iranian Mathematical Society (IMS), 2015-02-01)
