مرور Wavelet and Linear Algebra بر اساس عنوان
در حال نمایش موارد 1 - 20 از 131
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A-B-imprimitivity bimodule frames
(Vali-e-Asr university of Rafsanjan, 2017-08-01)Frames in Hilbert bimodules are a special case of frames in Hilbert C*-modules. The paper considers A-frames and B-frames and their relationship in a Hilbert A-B-imprimitivity bimodule. Also, it is given that every frame ...
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ACCELERATED ALGORITHMS FOR SILRTC ALGORITHM BY FAST TRI-FACTORIZATION METHOD AND TOTAL VARIATION REGULARIZATION
(Vali-e-Asr university of Rafsanjan, 2024-10-01)Tensor completion is one of the e cient methods for restoring datasuch that minimizing the rank of the tensor leads to an appropriate solution.However, it gives a non-convex objective function, which generates an NPhardproblem. ...
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Additive maps preserving the fixed points of Jordan products of operators
(Vali-e-Asr university of Rafsanjan, 2022-11-01)Let $\mathcal{B(X)}$ be the algebra of all bounded linear operators on a complex Banach space $\mathcal{X}$. In this paper, we determine the form of a surjective additive map $\phi: \mathcal{B(X)} \rightarrow \mathcal{B(X)}$ ...
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Amendment to the result on the trace of Haar wavelets matrix
(Vali-e-Asr university of Rafsanjan, 2020-08-01)Trace and some other interesting properties of Haar wavelets matrix of size $2^K$ are studied by Shiralashetti and Kumbinarasaiah cite{ref6}, results related to the trace of Haar wavelets matrix derived based on $K$ is ...
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Application of Shannon wavelet for solving boundary value problems of fractional differential equations I
(Vali-e-Asr university of Rafsanjan, 2014-08-01)Fractional calculus has been used to model physical and engineering processes that are found to be ...
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The Banach algebras with generalized matrix representation
(Vali-e-Asr university of Rafsanjan, 2020-11-01)A Banach algebra $mathfrak{A}$ has a generalized Matrix representation if there exist the algebras $A, B$, $(A,B)$-module $M$ and $(B,A)$-module $N$ such that $mathfrak{A}$ is isomorphic to the generalized matrix Banach ...
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$C$-spectral norm inequalities between operator matrices and their entries
(Vali-e-Asr university of Rafsanjan, 2023-12-01)In this paper, the notion of $C-$spectral norm is introduced for operators; it was defined and studied for matrices before. Here, some $C-$spectral norm inequalities between operator matrices and their operator entries, ...
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C*-Extreme Points and C*-Faces oF the Epigraph iF C*-Affine Maps in *-Rings
(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
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$C^{\ast}$-پوشش کوانتومی سیستمهای عملگری کوانتومی
(Vali-e-Asr university of Rafsanjan, 2022-05-01)در این مقاله، ضمن مرور مفهوم سیستمهای عملگری کوانتومی و قضیه نمایش آنها، به مطالعه $C^{\ast}$-پوشش کوانتومی یک سیستم عملگری کوانتومی میپردازیم.
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Cartesian decomposition of matrices and some norm inequalities
(Vali-e-Asr university of Rafsanjan, 2016-12-01)Let X be an n-square complex matrix with the Cartesian decomposition X = A + i B, where A and B are n times n Hermitian matrices. It is known that $Vert X Vert_p^2 leq 2(Vert A ...
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Characterizations of amenable hypergroups
(Vali-e-Asr university of Rafsanjan, 2017-08-01)Let $K$ be a locally compact hypergroup with left Haar measure and let $L^1(K)$ be the complex Lebesgue space associated with it. Let $L^infty(K)$ be the dual of $L^1(K)$. The purpose of this paper is to present some ...
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Characterizing Global Minimizers of the Difference of Two Positive Valued Affine Increasing and Co-radiant Functions
(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 ...
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Characterizing Lagrange Multipliers with Set Valued Constraints by Using Contingent Epiderivatives
(Vali-e-Asr university of Rafsanjan, 2024-10-01)In this paper, we employ the generalized Guignard's constraint qualification to present the dual cone characterizations of the constraint set $S$ with set valued constraints in $\R^n.$ The obtained results provide sufficient ...
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Characterizing sub-topical functions
(Vali-e-Asr university of Rafsanjan, 2017-12-01)In this paper, we first give a characterization of sub-topical functions with respect to their lower level sets and epigraph. Next, by using two different classes of elementary functions, we present a characterization of ...
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cK-frames and cK-Riesz bases in Hilbert spaces
(Vali-e-Asr university of Rafsanjan, 2023-12-01)In this paper, we prove some new results about cK-frames. Also, we introduce the concept of cK-Riesz basis and we provide a necessary and sufficient condition under which $F$ is a cK-Riesz basis. Finally, for the closed ...
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A class of Gabor frames with bounded compactly supported generator function
(Vali-e-Asr university of Rafsanjan, 2024-10-01)In this paper a class of Gabor frames with time shift parameter $a>0$, frequency shift parameter $b>0$ and bounded compactly supported generator function $g$ such that $supp\ g\subseteq\left[\left(k+2\right)a-\frac{2}{b} ...
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A Class of Nested Iteration Schemes for Generalized Coupled Sylvester Matrix Equation
(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 ...
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Classical wavelet systems over finite fields
(Vali-e-Asr university of Rafsanjan, 2016-12-01)This article presents an analytic approach to study admissibility conditions related to classical full wavelet systems over finite fields using tools from computational harmonic analysis and theoretical linear algebra. It ...
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A computational wavelet method for numerical solution of stochastic Volterra-Fredholm integral equations
(Vali-e-Asr university of Rafsanjan, 2016-06-01)A Legendre wavelet method is presented for numerical solutions of stochastic Volterra-Fredholm integral equations. The main characteristic of the proposed method is that it reduces stochastic Volterra-Fredholm integral ...
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Connes amenability for certain product of Banach algebras
(Vali-e-Asr university of Rafsanjan, 2022-11-01)In this paper we develop the notions of Connes amenability for certain product of Banach algebras. We give necessary and sufficient conditions for the existence of an invariant mean on the predual of $\Theta$-Lau product ...



