Results 21 to 30 of about 2,932 (231)

I: Fréchet-Urysohn spaces [PDF]

open access: yesMathematica Moravica, 2016
In this paper, we introduce the concept ss-sequentially quotient mapping. Using this concept, we characterize s-Fréchet-Urysohn spaces and s-sequential spaces.
Renukadevi V., Prakash B.
doaj  

Spaces whose Pseudocompact Subspaces are Closed Subsets

open access: yesApplied General Topology, 2004
Every first countable pseudocompact Tychonoff space X has the property that every pseudocompact subspace of X is a closed subset of X (denoted herein by “FCC”).
Alan Dow   +3 more
doaj   +1 more source

Frechet Spaces with Nuclear Kothe Quotients [PDF]

open access: yesTransactions of the American Mathematical Society, 1982
Each separable Frechet non-Banach space X with a continuous norm is shown to have a quotient Y with a continuous norm and a basis. If, in addition, Y can be chosen to be nuclear, we say that X has a nuclear Kothe quotient. We obtain a (slightly technical) characterization of those separable Frechet spaces with nuclear Kothe quotients.
Bellenot, Steven F., Dubinsky, Ed
openaire   +2 more sources

Controllability of mild solutions for fractional neutral evolution equations with state-dependent delay [PDF]

open access: yesArchives of Control Sciences
This paper examines the controllability of mild solutions for a specific class of neutral fractional evolution equations with finite state-dependent delays in Fréchet space, employing Caputo fractional derivatives.
Selma Baghli-Bendimerad   +1 more
doaj   +1 more source

Approximate Identities in Algebras of Compact Operators on Frechet Spaces

open access: yes, 2022
Bounded approximate identity(bai) is a key concept in the theory of amenability of algebras. In this paper, we show that algebra of compact operators on Frechet space X has both theright and left locally bounded approximate identities.
Ayinde, Semiu A.
core   +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

On the Existence of Polynomials with Chaotic Behaviour

open access: yesJournal of Function Spaces and Applications, 2013
We establish a general result on the existence of hypercyclic (resp., transitive, weakly mixing, mixing, frequently hypercyclic) polynomials on locally convex spaces.
Nilson C. Bernardes, Alfredo Peris
doaj   +1 more source

Structure space of tensor products of Frechet *-algebras

open access: yes, 2006
In the case of a non-commutative m*-convex algebra, the topological spectrum (Gel'fand space) of the commutative case is replaced by the structure space consisting of equivalent classes of continuous topologically irreducible representations.
Fragoulopoulou, Maria
core   +1 more source

Statistical Bochner Integral on Frechet Space

open access: yesWSEAS TRANSACTIONS ON MATHEMATICS, 2023
Probability theory including the Bochner integral is a very important part of modern mathematical concepts including the modern theory of probabilities, especially in the concept of mathematical expectation and dispersion. In this, study a statistical approach form of Bochner’s theory is given and extended, but some fundamental properties of ...
Anita Caushi, Ervenila Musta
openaire   +1 more source

Frechet distance on the set of compact trees

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2020
We introduce a counterpart of the Frechet distance for the rooted trees in a metric space. Some properties and possible generalizations of this distance are discussed.
Olha Lozinska   +2 more
doaj   +1 more source

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