Results 11 to 20 of about 1,420 (191)

Weakly compactly generated Frechet spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1979
It is proved that a weakly compact generated Frechet space is Lindelöf in the weak topology. As a corollary it is proved that for a finite measure space every weakly measurable function into a weakly compactly generated Frechet space is weakly equivalent
Surjit Singh Khurana
doaj   +2 more sources

Almost automorphic functions with values in p-Frechet spaces

open access: yesElectronic Journal of Differential Equations, 2008
In this paper we develop a theory of almost automorphic functions with values in p-Frechet spaces ...
Gaston M. N'Guerekata   +2 more
doaj   +2 more sources

Local subdifferentials and multivariational inequalities in Banach and Frechet spaces [PDF]

open access: yesOpuscula Mathematica, 2008
Some functional-topological concepts of subdifferential and locally subdifferential maps in Frechet spaces are established. Multivariational inequalities with an operator of the pseudo-monotone type, connected with subdifferential maps, are considered.
Pavlo O. Kasyanov   +2 more
doaj   +1 more source

Frechet spaces of general Dirichlet series [PDF]

open access: yes, 2021
[EN] Inspired by a recent article on Frechet spaces of ordinary Dirichlet series Sigma a(n)n(-s) due to J. Bonet, we study topological and geometrical properties of certain scales of Frechet spaces of general Dirichlet spaces Sigma a(n)e(-lambda ns ...
Sevilla Peris, Pablo   +4 more
core   +1 more source

The existence of a factorized unbounded operator between Frechet spaces [PDF]

open access: yes, 2020
For locally convex spaces E and F, the continuous linear map T : E -> F is called bounded if there is a zero neighborhood U of E such that T(U) is bounded in F. Our main result is that the existence of an unbounded operator T between Frechet spaces E and
Yurdakul, Murat, Kizgut, Ersin
core   +1 more source

The compact approximation property for spaces of holomorphic mappings on Frechet spaces

open access: yes, 2021
In this paper, the compact approximation property on Frechet spaces is characterized in terms of holomorphic mappings. We show that a Frechet space E has the compact approximation property if and only if every holomorphic mapping on a balanced open ...
Caliskan, E.   +3 more
core   +1 more source

Gateaux and Frechet Derivative In Neutrosophic Normed Linear Spaces [PDF]

open access: yesNeutrosophic Sets and Systems, 2023
In this study, we present the neutrosophic derivatives, the neutrosophic Gateaux derivative, and the neutrosophic Frechet derivative, and we examine some of their features. The relationship between the neutrophilic Frechet derivative and the neutrophilic
M. Jeyaraman   +3 more
doaj   +1 more source

Evolution equations in Fréchet spaces

open access: yesJournal of Mathematical Sciences and Modelling, 2018
This paper deals with the existence of mild solutions for a class of evolution equations. The technique used is a generalization of the classical Darbo fixed point theorem for Fr\'{e}chet spaces associated with the concept of measure of noncompactness.
Mouffak Benchohra   +3 more
doaj   +1 more source

Tameness in Frechet spaces of analytic functions

open access: yes, 2016
A Frechet space chi with a sequence {parallel to.parallel to k}(k=1)(infinity) of generating seminorms is called tame if there exists an increasing function sigma : N -> Nsuch that for every continuous linear operator T from chi into itself, there exist ...
Aytuna, Aydin
core   +1 more source

Uniform Convergence and Spectra of Operators in a Class of Fréchet Spaces

open access: yesAbstract and Applied Analysis, 2014
Well-known Banach space results (e.g., due to J. Koliha and Y. Katznelson/L. Tzafriri), which relate conditions on the spectrum of a bounded operator T to the operator norm convergence of certain sequences of operators generated by T, are extended to ...
Angela A. Albanese   +2 more
doaj   +1 more source

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