Results 21 to 30 of about 20,529 (316)

Hybrid projected subgradient-proximal algorithms for solving split equilibrium problems and split common fixed point problems of nonexpansive mappings in Hilbert spaces

open access: yesFixed Point Theory and Applications, 2018
In this paper, we propose two strongly convergent algorithms which combines diagonal subgradient method, projection method and proximal method to solve split equilibrium problems and split common fixed point problems of nonexpansive mappings in a real ...
Anteneh Getachew Gebrie   +1 more
doaj   +1 more source

On well‐definability of the L∞/L2 Hankel operator and detection of all the critical instants in sampled‐data systems

open access: yesIET Control Theory & Applications, 2021
Because sampled‐data systems have h‐periodic nature with the sampling period h, an arbitrary Θ∈[0,h) is taken and the quasi L∞/L2 Hankel operator at Θ is defined as the mapping from L2(−∞,Θ) to L∞[Θ,∞). Its norm called the quasi L∞/L2 Hankel norm at Θ is
Tomomichi Hagiwara   +2 more
doaj   +1 more source

Norm attaining operators [PDF]

open access: yesIsrael Journal of Mathematics, 1982
Every Banach space is isomorphic to a space with the property that the norm-attaining operators are dense in the space of all operators into it, for any given domain space. A super-reflexive space is arbitrarily nearly isometric to a space with this property.
openaire   +1 more source

Tight computationally efficient approximation of matrix norms with applications

open access: yesOpen Journal of Mathematical Optimization, 2022
We address the problems of computing operator norms of matrices induced by given norms on the argument and the image space. It is known that aside of a fistful of “solvable cases”, most notably, the case when both given norms are Euclidean, computing ...
Juditsky, Anatoli   +2 more
doaj   +1 more source

Norm Reduction of Averaging Operators [PDF]

open access: yesProceedings of the American Mathematical Society, 1972
Suppose ϕ : S → T \phi :S \to T is an irreducible map of compact Hausdorff spaces, and μ : T → M ( S ) \mu :T \to M(S) the integral representation of an averaging operator for ϕ \phi . We obtain an inequality of
Cohen, H. B., Labbe, M. A., Wolfe, J.
openaire   +2 more sources

Inequalities for the fractional convolution operator on differential forms

open access: yesJournal of Inequalities and Applications, 2018
The purpose of this paper is to derive some Coifman type inequalities for the fractional convolution operator applied to differential forms. The Lipschitz norm and BMO norm estimates for this integral type operator acting on differential forms are also ...
Zhimin Dai, Huacan Li, Qunfang Li
doaj   +1 more source

Modified Krasnoselski–Mann iterative method for hierarchical fixed point problem and split mixed equilibrium problem

open access: yesJournal of Inequalities and Applications, 2020
In this paper, we introduce a modified Krasnoselski–Mann type iterative method for capturing a common solution of a split mixed equilibrium problem and a hierarchical fixed point problem of a finite collection of k-strictly pseudocontractive nonself ...
Jong Kyu Kim, Prashanta Majee
doaj   +1 more source

On solvability of focal boundary value problems for higher order functional differential equations with integral restrictions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
Sharp conditions are obtained for the unique solvability of focal boundary value problems for higher-order functional differential equations under integral restrictions on functional operators.
Eugene Bravyi
doaj   +1 more source

Volterra integral operator and essential norm on Dirichlet type spaces

open access: yesAIMS Mathematics, 2021
In this paper, we study the boundedness and essential norm of Volterra integral operator $ V_g $ and integral operator $ S_g $ on Dirichlet type spaces $ {\mathcal{D}_{K, \alpha}} $.
Liu Yang, Ruishen Qian
doaj   +1 more source

Operators That Achieve the Norm [PDF]

open access: yesIntegral Equations and Operator Theory, 2011
17 ...
Carvajal, Xavier, Neves, Wladimir
openaire   +3 more sources

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