Volume 5, Issue 2

 

ارسال های اخیر

  • On Some Special Classes of Sonnenschein Matrices 

    Aminizadeh, Masod؛ Talebi, Gholamreza (Vali-e-Asr university of Rafsanjan, 2018-01-01)
    ‎In this paper we consider the special classes of Sonnenschein matrices‎, ‎namely the Karamata matrices $K[alpha,beta]=left(a_{n,k}right)$ with the entries‎ ‎[{a_{n,k}} = sumlimits_{v = 0}^k {left( begin{array}{l}‎

  • A Class of Nested Iteration Schemes for Generalized Coupled Sylvester Matrix Equation 

    Sheybani, Malihe؛ Tajaddini, Azita؛ Yaghoobi, Mohammad Ali (Vali-e-Asr university of Rafsanjan, 2018-01-01)
    Global Krylov subspace methods are the most efficient and robust methods to solve generalized coupled Sylvester matrix equation. In this paper, we propose the nested splitting conjugate gradient process for solving this ...

  • Characterizing Global Minimizers of the Difference of Two Positive Valued Affine Increasing and Co-radiant Functions 

    Askarizadeh Khanaman, Mohammad؛ Mohebi, Hossein (Vali-e-Asr university of Rafsanjan, 2018-01-01)
    ‎Many optimization problems can be reduced to a problem with an increasing and co-radiant objective function by a suitable transformation of variables. Functions, which are increasing and co-radiant, have found many ...

  • C*-Extreme Points and C*-Faces oF the Epigraph iF C*-Affine Maps in *-Rings 

    Ebrahimi Meymand, Ali (Vali-e-Asr university of Rafsanjan, 2018-01-01)
    Abstract. In this paper, we define the notion of C*-affine maps in the unital *-rings and we investigate the C*-extreme points of the graph and epigraph of such maps. We show that for a C*-convex map f on a

  • *-Operator Frame for End_{mathcal{A}}^{ast}(mathcal{H}) 

    Mohamed, Rossafi؛ Samir, Kabbaj (Vali-e-Asr university of Rafsanjan, 2018-01-01)
    In this paper, a new notion of frames is introduced: $ast$-operator frame as generalization of $ast$-frames in Hilbert $C^{ast}$-modules introduced by A. Alijani and M. A. Dehghan cite{Ali} and we establish some results.

  • On the Remarkable Formula for Spectral Distance of Block Southeast Submatrix 

    Nazari, Alimohammad؛ Nezami, Atiyeh (Vali-e-Asr university of Rafsanjan, 2018-01-01)
    ‎‎‎This paper presents a remarkable formula for spectral distance of a given block normal matrix $G_{D_0} = begin{pmatrix}‎ ‎A & B ‎ ‎C & D_0‎ ‎end{pmatrix} $ to set of block normal matrix $G_{D}$ (as ...