Volume 40, Issue 1
مرور بر اساس
ارسال های اخیر
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Implicit iteration approximation for a finite family of asymptotically quasi-pseudocontractive type mappings
(Springer and the Iranian Mathematical Society (IMS), 2014-02-01)In this paper, strong convergence theorems of Ishikawa type implicit iteration process with errors for a finite family of asymptotically nonexpansive in the intermediate sense and asymptotically
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Various kinds of regular injectivity for $S$-posets
(Springer and the Iranian Mathematical Society (IMS), 2014-02-01)In this paper some properties of weak regular injectivity for $S$-posets, where $S$ is a pomonoid, are studied. The behaviour of different kinds of weak regular injectivity with products, coproducts ...
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Existence and uniqueness of common coupled fixed point results via auxiliary functions
(Springer and the Iranian Mathematical Society (IMS), 2014-02-01)The purpose of this paper is to establish some coupled coincidence point theorems for mappings having a mixed $g$-monotone property in partially ordered metric spaces. Also, we present a result on the existence and ...
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Stochastic bounds for a single server queue with general retrial times
(Springer and the Iranian Mathematical Society (IMS), 2014-02-01)We propose to use a mathematical method based on stochastic comparisons of Markov chains in order to derive performance indice bounds. The main goal of this paper is to investigate various monotonicity properties of a ...
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Relative volume comparison theorems in Finsler geometry and their applications
(Springer and the Iranian Mathematical Society (IMS), 2014-02-01)We establish some relative volume comparison theorems for extremal volume forms of Finsler manifolds under suitable curvature bounds. As their applications, we obtain some results on curvature and topology of Finsler ...
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Embedding measure spaces
(Springer and the Iranian Mathematical Society (IMS), 2014-02-01)For a given measure space $(X,{mathscr B},mu)$ we construct all measure spaces $(Y,{mathscr C},lambda)$ in which $(X,{mathscr B},mu)$ is embeddable. The construction is modeled on the ultrafilter construction of the ...
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A matrix LSQR algorithm for solving constrained linear operator equations
(Springer and the Iranian Mathematical Society (IMS), 2014-02-01)In this work, an iterative method based on a matrix form of LSQR algorithm is constructed for solving the linear operator equation $mathcal{A}(X)=B$ and the minimum Frobenius norm residual problem $||mathcal{A} ...
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On the numerical solution of generalized Sylvester matrix equations
(Springer and the Iranian Mathematical Society (IMS), 2014-02-01)The global FOM and GMRES algorithms are among the effective methods to solve Sylvester matrix equations. In this paper, we study these algorithms in the case that the coefficient matrices are ...
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An extension theorem for finite positive measures on surfaces of finite dimensional unit balls in Hilbert spaces
(Springer and the Iranian Mathematical Society (IMS), 2014-02-01)A consistency criteria is given for a certain class of finite positive measures on the surfaces of the finite dimensional unit balls in a real separable Hilbert space. It is proved, through a Kolmogorov type ...
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A lower estimate of harmonic functions
(Springer and the Iranian Mathematical Society (IMS), 2014-02-01)We shall give a lower estimate of harmonic functions of order greater than one in a half space, which generalize the result obtained by B. Ya. Levin in a half plane.
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Investigation on the Hermitian matrix expression subject to some consistent equations
(Springer and the Iranian Mathematical Society (IMS), 2014-02-01)In this paper, we study the extremal ranks and inertias of the Hermitian matrix expression $$ f(X,Y)=C_{4}-B_{4}Y-(B_{4}Y)^{*}-A_{4}XA_{4}^{*},$$ where $C_{4}$ is Hermitian, $*$ denotes the ...
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Bulletin of the Iranian Mathematical Society
(Springer and the Iranian Mathematical Society (IMS), 2014-02-01)
