Results 91 to 100 of about 571,685 (162)

The order $\sigma $-complete vector lattice of AM-compact operators

open access: yes, 1995
summary:We establish necessary and sufficient conditions under which the linear span of positive AM-compact operators (in the sense of Fremlin) from a Banach lattice $E$ into a Banach lattice $F$ is an order $\sigma $-complete vector ...
Aqzzouz, Belmesnaoui   +3 more
core   +1 more source

A counterexample to the complemented subspace problem in Banach lattices

open access: yes, 2023
Building on a recent construction of G. Plebanek and the third named author, it is shown that a complemented subspace of a Banach lattice need not be linearly isomorphic to a Banach lattice.
Salguero-Alarcón, A.   +3 more
core  

Generators of maximal left ideals in Banach algebras [PDF]

open access: yes, 2012
In 1971, Grauert and Remmert proved that a commutative, complex, Noetherian Banach algebra is necessarily finite-dimensional. More precisely, they proved that a commutative, complex Banach algebra has finite dimension over C whenever all the closed ...
Dales, H.G., Zelazko, W.
core  

Existence of solutions for discontinuous functional equations and elliptic boundary-value problems

open access: yesElectronic Journal of Differential Equations, 2002
We prove existence results for discontinuous functional equations in general $L^p$-spaces and apply these results to the solvability of implicit and explicit elliptic boundary-value problems involving discontinuous nonlinearities.
Siegfried Carl, Seppo Heikkila
doaj  

Existtence of smooth uttilities on Bannach lattices

open access: yesRect@, 1998
In this paper we consider consumption sets of an infinite dimensional commodity space. Our work deals with the representability of a preference relation by differentiable utility functions, that is, we obtain sufficient conditions for the existence of ...
Vázquez Pampín, C., Besada Morais, M.
doaj  

Optimal control of stochastic partial differential equations in Banach spaces [PDF]

open access: yes, 2010
In this thesis we study optimal control problems in Banach spaces for stochastic partial differential equations. We investigate two different approaches.
Serrano Perdomo, Rafael Antonio
core  

Idempotent vector spaces and their linear transformations

open access: yesConcrete Operators
This article extends topics about linear algebra and operator theoretic linear transformations on complex vector spaces to those on bicomplex spaces.
Johnston William, Wahl Rebecca G.
doaj   +1 more source

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