Results 11 to 20 of about 603,801 (119)

Spin-polarized transport in ferromagnetic multilayers: An unconditionally convergent FEM integrator. [PDF]

open access: yesComput Math Appl, 2014
23 pages, 1 figureWe propose and analyze a decoupled time-marching scheme for the coupling of the Landau-Lifshitz-Gilbert equation with a quasilinear diffusion equation for the spin accumulation.
Abert C   +5 more
europepmc   +2 more sources

Eberlein–Šmulian theorem and some of its applications [PDF]

open access: green, 2014
Masteroppgave i matematikkdidaktikk – Universitetet i Agder 2014The thesis is about Eberlein-Šmulian and some its applications. The goal is to investigate and explain different proofs of the Eberlein-Šmulian theorem. First we introduce the general theory
Kristina Qarri
openalex   +3 more sources

Mean-ρ portfolio selection and ρ-arbitrage for coherent risk measures [PDF]

open access: yesMathematical Finance, Volume 32, Issue 1, Page 226-272, January 2022., 2022
Abstract We revisit mean‐risk portfolio selection in a one‐period financial market where risk is quantified by a positively homogeneous risk measure . We first show that under mild assumptions, the set of optimal portfolios for a fixed return is nonempty and compact.
Herdegen, Martin, Khan, Nazem
core   +2 more sources

Entire functions on banach spaces with the U$U$‐property

open access: yesBulletin of the London Mathematical Society, Volume 54, Issue 1, Page 126-144, February 2022., 2022
Abstract Let E$E$ be a Banach space without a copy of l1$l_{1}$ and with the U$U$‐property. We show that every entire function on E$E$ which is weakly continuous on bounded sets is bounded on bounded sets of E$E$. We answer this way, in the affirmative, to a problem raised by Aron, Hervés, and Valdivia in 1983, for these spaces.
Humberto D. Carrión V.
wiley   +1 more source

Leray–Schauder Fixed Point Theorems for Block Operator Matrix with an Application

open access: yesJournal of Mathematics, Volume 2021, Issue 1, 2021., 2021
In this paper, we establish some new variants of Leray–Schauder‐type fixed point theorems for a 2 × 2 block operator matrix defined on nonempty, closed, and convex subsets Ω of Banach spaces. Note here that Ω need not be bounded. These results are formulated in terms of weak sequential continuity and the technique of De Blasi measure of weak ...
Mohamed Amine Farid   +3 more
wiley   +1 more source

Composition Operators on Classes of Holomorphic Functions on Banach Spaces [PDF]

open access: yes, 2022
[ES] El objetivo principal de esta tesis es el estudio de diferentes propiedades (principalmente ergódicas) de operadores de composición y de composición ponderados actuando en espacios de funciones holomorfas definidas en un espacio de Banach de ...
Santacreu Ferra, Daniel
core   +1 more source

Overcomplete sets in non-separable Banach spaces [PDF]

open access: yes, 2020
We introduce and study the notion of overcomplete set in a Banach space, that subsumes and extends the classical concept of overcomplete sequence in a (separable) Banach space.
Russo, Tommaso, Somaglia, Jacopo
core   +2 more sources

Constant sign and nodal solutions for parametric anisotropic (p,2)-equations [PDF]

open access: yes, 2021
We consider an anisotropic (Formula presented.) -equation, with a parametric and superlinear reaction term. We show that for all small values of the parameter the problem has at least five nontrivial smooth solutions, four with constant sign and the ...
Papageorgiou N. S.   +2 more
core   +1 more source

Versions of Eberlein-Smulian and Amir-Lindenstrauss theorems in the framework of conditional sets [PDF]

open access: yes, 2015
Based on conditional set theory, we study conditional weak topologies, extending some well-known results to this framework and culminating with the proof of conditional versions of Eberlein-\v{S}mulian and Amir-Lindenstrauss Theorems.
J. M. Zapata
semanticscholar   +1 more source

Stability, the NIP, and the NSOP: model theoretic properties of formulas via topological properties of function spaces [PDF]

open access: yesMathematical Logic Quarterly, 2014
We study and characterize stability, the negation of the independence property (NIP) and the negation of the strict order property (NSOP) in terms of topological and measure theoretical properties of classes of functions.
Karim Khanaki
semanticscholar   +1 more source

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