مرور Volume 43, Issue 5 بر اساس عنوان

در حال نمایش موارد 1 - 20 از 26

  • Affinization of Segre products of partial linear spaces 

    Petelczyc, K.؛ Żynel, M. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    Hyperplanes and hyperplane complements in the Segre product of partial linear spaces are investigated. The parallelism of such a complement is characterized in terms of the point-line incidence. Assumptions, under which ...

  • An algorithm for approximating nondominated points of convex multiobjective optimization problems 

    Ghaznavi, M.؛ Azizi, Z. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎In this paper‎, ‎we present an algorithm for generating approximate nondominated points of a multiobjective optimization problem (MOP)‎, ‎where the constraints and the objective functions are convex‎. ‎We provide outer ...

  • Application of frames in Chebyshev and conjugate gradient methods 

    Jamali, H.؛ Afroomand, E. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎Given a frame of a separable Hilbert space $H$‎, ‎we present some‎ ‎iterative methods for solving an operator equation $Lu=f$‎, ‎where $L$ is a bounded‎, ‎invertible and symmetric‎ ‎operator on $H$‎. ‎We present some ...

  • Benson's algorithm for nonconvex multiobjective problems via nonsmooth Wolfe duality 

    Shafiei, N. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎In this paper‎, ‎we propose an algorithm to obtain an approximation set of the (weakly) nondominated points of nonsmooth multiobjective optimization problems with equality and inequality constraints‎. ‎We use an extension ...

  • Bulletin of the Iranian Mathematical Society 

    پدیدآور نامشخص (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)

  • Complete pivoting strategy for the $IUL$ preconditioner obtained from Backward Factored APproximate INVerse process 

    Rafiei, A.؛ Bollhoefer, M. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎In this paper‎, ‎we use a complete pivoting strategy to compute the IUL preconditioner obtained as the by-product of the Backward Factored APproximate INVerse process‎. ‎This pivoting is based on the complete pivoting ...

  • Convex combinations of harmonic shears of slit mappings 

    Shi, L.؛ Wang, Z.-G.؛ Rasila, A.؛ Sun, Y. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎In this paper‎, ‎we study the convex combinations of harmonic mappings obtained by shearing a class of slit conformal mappings‎. ‎Sufficient conditions for the convex combinations of harmonic mappings of this family to ...

  • Critical fixed point theorems in Banach algebras under weak topology features 

    Ben Amar, A.؛ Tlili, A. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    In this paper, we establish some new critical fixed point theorems for the sum $AB+C$ in a Banach algebra relative to the weak topology, where $frac{I-C}{A}$ allows to be noninvertible. In addition, a special class of ...

  • Diagonal arguments and fixed points 

    Karimi, A.؛ Salehi, S. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎A universal schema for diagonalization was popularized by N.S‎. ‎Yanofsky (2003)‎, ‎based on a pioneering work of F.W‎. ‎Lawvere (1969)‎, ‎in which the existence of a (diagonolized-out and contradictory) object implies ...

  • Dilations for $C^ast$-dynamical systems with abelian groups on Hilbert $C^ast$-modules 

    Wang, Z.؛ Zhang, J. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎In this paper we investigate the dilations of completely positive definite representations‎ ‎of (C^ast)-dynamical systems with abelian groups on Hilbert (C^ast)-modules‎. ‎We show that if ((mathcal{A}‎, ‎G,alpha)) is a ...

  • Inverse Sturm--Liouville problems using three spectra with finite number of transmissions and parameter dependent conditions 

    Shahriari, M. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎In this manuscript‎, ‎we study various by uniqueness results for inverse spectral problems of Sturm--Liouville operators using three spectrum with a finite number of discontinuities at interior points which we impose the ...

  • Measure of non strict singularity of Schechter essential spectrum of two bounded operators and application 

    Abdmouleh, F.؛ Walha, I. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    In this paper‎, ‎we discuss the essential spectrum of sum of two bounded operators‎ ‎using measure of non strict singularity‎. ‎Based on this new investigation‎, ‎a problem of one-speed neutron transport operator is presented‎.

  • A new characterization of $L_2(q)$ by the largest element orders 

    Jiang, Q.H.؛ Shao, ‎C.G.؛ Shi, W.J.؛ Zhang, ‎Q.L. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎We characterize the finite simple groups $L_2(q)$ by the group orders and the largest‎ ‎element orders‎, ‎where $q$ is a prime or $q=2^a$‎, ‎with $2^a+1$ or $2^a-1$ a prime‎.

  • A new one-step iterative process for approximating common fixed points of a countable family of quasi-nonexpansive multi-valued mappings in CAT(0) spaces 

    Suantai, S.؛ Panyanak, B.؛ Phuengrattana, W. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎In this paper‎, ‎we propose a new one-step iterative process for a‎ ‎countable family of quasi-nonexpansive multi-valued mappings in a‎ ‎CAT(0) space‎. ‎We also prove strong and $Delta$-convergence theorems‎ ‎of the ...

  • NSE characterization of some linear groups 

    Ahanjideh, N.؛ Mousavi, L.؛ Taeri, B. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎For a finite group $G$‎, ‎let $nse(G)={m_kmid kinpi_e(G)}$‎, ‎where $m_k$ is the number of elements of order $k$ in $G$‎ ‎and $pi_{e}(G)$ is the set of element orders of $G$‎. ‎In this paper‎, ‎we prove that $Gcong L_m(2)$ ...

  • On a p-Laplacian system and a generalization of the Landesman-Lazer type condition 

    Hung, B.Q.؛ Toan, H.Q. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    This article shows the existence of weak solutions of a resonance problem for nonuniformly p-Laplacian system in a bounded domain in $mathbb{R}^N$‎. ‎Our arguments are based on the minimum principle and rely on a generalization ...

  • On annihilator ideals in skew polynomial rings 

    Zahiri, M.؛ Moussavi, A.؛ Mohammadi, R. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    This article examines annihilators in the skew polynomial ring $R[x;alpha,delta]$. A ring is strongly right $AB$ if everynon-zero right annihilator is bounded. In this paper, we introduce and investigate a particular ...

  • On characterizations of hyperbolic harmonic Bloch and Besov spaces 

    Fu, X. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎We define hyperbolic harmonic $omega$-$alpha$-Bloch space‎ ‎$mathcal{B}_omega^alpha$ in the unit ball $mathbb{B}$ of ${mathbb R}^n$ and‎ ‎characterize it in terms of‎ ‎$$frac{omegabig((1-|x|^2)^{beta}(1-|y|^2)^{alpha-be ...

  • On some generalized recurrent manifolds 

    Shaikh, A.A.؛ Roy, I.؛ Kundu, H. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎The object of the present paper is to introduce and study a type of non-flat semi-Riemannian manifolds‎, ‎called‎, ‎super generalized recurrent manifolds which generalizes both the notion of hyper generalized recurrent ...

  • On the character space of Banach vector-valued function algebras 

    Abtahi, M. (Springer and the Iranian Mathematical Society (IMS), 2017-10-01)
    ‎Given a compact space $X$ and a commutative Banach algebra‎ ‎$A$‎, ‎the character spaces of $A$-valued function algebras on $X$ are‎ ‎investigated‎. ‎The class of natural $A$-valued function algebras‎, ‎those whose ...