Results 11 to 20 of about 1,495,717 (183)

Regular Operator Equations: Conditions for Regularity [PDF]

open access: yesProceedings of the American Mathematical Society, 1982
Regular operator equations are causal equations admitting unique solutions and have the property that all of their limiting equations along solutions admit unique solutions. Sufficient conditions which guarantee that an operator equation
George Karakostas
openaire   +3 more sources

Matrix Regular Operator Spaces [PDF]

open access: yesJournal of Functional Analysis, 1998
A norm on an ordered real Banach space \(E\) is called regular (or Riesz norm) if \(-x\leq y\leq x\) implies \(\| y\|\leq\| x\|\), and \(\| y\|< 1\) implies the existence of \(x\in E\) with \(\| x\|< 1\) and \(-x\leq y\leq x\). This concept is generalized to matrix ordered complex operator spaces [as introduced by \textit{M.-D. Choi} and \textit{E.
Schreiner, Walter J.
openaire   +2 more sources

The induced generalized OWA operator (WP) [PDF]

open access: yes, 2013
[spa] Se presenta el operador OWA generalizado inducido (IGOWA). Es un nuevo operador de agregación que generaliza al operador OWA a través de utilizar las principales características de dos operadores muy conocidos como son el operador OWA generalizado ...
Merigó Lindahl, José M.   +1 more
core   +7 more sources

On Regular Operator Approximation Theory [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 1994
The approximation-solvability of nonlinear operator equations involving \(\phi\)-pseudo-monotone operators and their compact perturbations is considered by the method of regular operator approximation theory -- an improvement over the usual convergence method of approximate solutions in the sense that it yields the convergence of approximate solutions ...
Verma, Ram U., Verman, R.U.
core   +6 more sources

Operator Regular Variation of Multivariate Liouville Distributions [PDF]

open access: yes, 2023
Operator regular variation reveals general power-law distribution tail decay phenomena using operator scaling, that includes multivariate regular variation with scalar scaling as a special case.
Li, Haijun
core   +1 more source

Relations entre Psi_B et quelques représentations temps-fréquence [PDF]

open access: yes, 2010
Psi_B operator is an energy operator that measures the interactions between two complex signals. In this letter, new properties of Psi_B operator are presented.
BOUDRAA, Abdel-Ouahab
core   +1 more source

A function space model for canonical systems [PDF]

open access: yes, 2011
Recently, a generalization to the Pontryagin space setting of the notion of canonical (Hamiltonian) systems which involves a finite number of inner singularities has been given.
Woracek, H., Langer, Matthias
core   +4 more sources

J-Self-Adjoint Projections in Krein Spaces

open access: yesJournal of Function Spaces, 2020
Let ℋ be a Krein space with fundamental symmetry J. Starting with a canonical block-operator matrix representation of J, we study the regular subspaces of ℋ.
Xiao-Ming Xu, Yile Zhao
doaj   +1 more source

Beyond Regular Semigroups [PDF]

open access: yes, 2012
The topic of this thesis is the class of weakly U-abundant semigroups. This class is very wide, containing inverse, orthodox, regular, ample, adequate, quasi-adequate, concordant, abundant, restriction, Ehresmann and weakly abundant semigroups.
Wang, Yanhui
core   +6 more sources

Maximal functions and subordination for operator groups. [PDF]

open access: yes, 2002
Let E be a UMD Banach space and L a positive and self-adjoint operator in L^2 of Laplace type such that the imaginary powers L^{-it} form a C_0 group of exponential growth on L^p(E).
Blower, Gordon
core   +4 more sources

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