Results 21 to 30 of about 439,416 (273)

Projection Matrix Design for Co-Sparse Analysis Model Based Compressive Sensing

open access: yesMATEC Web of Conferences, 2018
Co-sparse analysis model based-compressive sensing (CAMBCS) has gained attention in recent years as alternative to conventional sparse synthesis model based (SSMB)-CS.
Oey Endra, Gunawan Dadang, Sudiana Dodi
doaj   +1 more source

PROJECTION-ITERATION REALIZATION OF A NEWTON-LIKE METHOD FOR SOLVING NONLINEAR OPERATOR EQUATIONS

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2019
We consider the problem of existence and location of a solution of a nonlinear operator equation with a Fr´echet differentiable operator in a Banach space and present the convergence results for a projection-iteration method based on a Newton-like method 
Liudmyla L. Hart
doaj   +1 more source

Aggregation-iterative analogues and generalizations of projection-iterative methods

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
Aggregation-iterative algorithms for linear operator equations are constructed and investigated. These algorithms cover methods of iterative aggregation and projection-iterative methods.
Shuvar B.F., Obshta A.F., Kopach M.I.
doaj   +3 more sources

Logarithm of the Discrete Fourier Transform

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2007
The discrete Fourier transform defines a unitary matrix operator. The logarithm of this operator is computed, along with the projection maps onto its eigenspaces. A geometric interpretation of the discrete Fourier transform is also given.
Michael Aristidou, Jason Hanson
doaj   +1 more source

Completely contractive projections on operator algebras

open access: yes, 2016
The main goal of this paper is to find operator algebra variants of certain deep results of Stormer, Friedman and Russo, Choi and Effros, Effros and Stormer, Robertson and Youngson, Youngson, and others, concerning projections on C*-algebras and their ...
Barton   +10 more
core   +1 more source

Robust Control of Air-Breathing Hypersonic Vehicles With Adaptive Projection-Based Parameter Estimation

open access: yesIEEE Access, 2019
A robust controller with an adaptive projection-based parameter estimator is presented for the air-breathing hypersonic vehicles. First, a novel parameter-varying model is established wherein the number of variable parameters is significantly reduced. In
Shili Tan, Jiong Li, Humin Lei
doaj   +1 more source

On a general analytical formula for U_q(su(3))-Clebsch-Gordan coefficients

open access: yes, 2001
We present the projection operator method in combination with the Wigner-Racah calculus of the subalgebra U_q(su(2)) for calculation of Clebsch-Gordan coefficients (CGCs) of the quantum algebra U_q(su(3)).
D. J. Rowe   +9 more
core   +1 more source

A Strong Convergence Theorem for Relatively Nonexpansive Mappings and Equilibrium Problems in Banach Spaces

open access: yesAbstract and Applied Analysis, 2012
Relatively nonexpansive mappings and equilibrium problems are considered based on a shrinking projection method. Using properties of the generalized f-projection operator, a strong convergence theorem for relatively nonexpansive mappings and equilibrium ...
Mei Yuan   +3 more
doaj   +1 more source

The Best Approximation Theorems and Fixed Point Theorems for Discontinuous Increasing Mappings in Banach Spaces

open access: yesAbstract and Applied Analysis, 2015
We prove that Fan’s theorem is true for discontinuous increasing mappings f in a real partially ordered reflexive, strictly convex, and smooth Banach space X.
Dezhou Kong, Lishan Liu, Yonghong Wu
doaj   +1 more source

The Combination Projection Method for Solving Convex Feasibility Problems

open access: yesMathematics, 2018
In this paper, we propose a new method, which is called the combination projection method (CPM), for solving the convex feasibility problem (CFP) of finding some x * ∈ C : = ∩ i = 1 m { x ∈ H | c i ( x ) ≤ 0 } ,
Songnian He, Qiao-Li Dong
doaj   +1 more source

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