Results 91 to 100 of about 4,892,851 (274)

Simple Proofs for Bochner-Schoenberg-Eberlein and the Bochner-Schoenberg-Eberlein Module Properties on ℓpX,A

Journal of Function Spaces
Let X be a nonempty set, A be a commutative Banach algebra, and 1 ...
Shirin Tavkoli, Rasoul Abazari, Ali Jabbari   +2 more
doaj   +1 more source

The Szlenk Index and the Fixed Point Property under Renorming

Fixed Point Theory and Applications, 2010
Assume that X is a Banach space such that its Szlenk index Sz(X) is less than or equal to the first infinite ordinal ω. We prove that X can be renormed in such a way that X with the resultant norm satisfies R(X)<2, where R(⋅) is the ...
T. Dom&#237;nguez Benavides
doaj   +1 more source

Richards's curve induced Banach space valued multivariate neural network approximation. [PDF]

Arab J Math, 2023
Anastassiou GA, Karateke S.
europepmc   +1 more source

Cazenave‐Dickstein‐Weissler‐Type Extension of Fujita'S Problem on Heisenberg Groups

Mathematical Methods in the Applied Sciences, Volume 49, Issue 2, Page 499-511, 30 January 2026.
ABSTRACT This paper investigates the Fujita critical exponent for a heat equation with nonlinear memory posed on the Heisenberg groups. A sharp threshold is identified such that, for exponent values less than or equal to this critical value, no global solution exists, regardless of the choice of nonnegative initial data. Conversely, for exponent values
Mokhtar Kirane, Ahmad Z. Fino, Berikbol T. Torebek, Zineb Sabbagh   +3 more
wiley   +1 more source

Some properties of pre-quasi operator ideal of type generalized Cesáro sequence space defined by weighted means

Open Mathematics, 2019
Let E be a generalized Cesáro sequence space defined by weighted means and by using s-numbers of operators from a Banach space X into a Banach space Y.
Bakery Awad A., Mohammed Mustafa M.
doaj   +1 more source

Richards's curve induced Banach space valued ordinary and fractional neural network approximation. [PDF]

Rev R Acad Cienc Exactas Fis Nat A Mat, 2023
Anastassiou GA, Karateke S.
europepmc   +1 more source

A separable somewhat reflexive Banach space with nonseparable dual

, 1974
An example is given of a separable Banach space X whose dual is not separable, but each infinite-dimensional subspace of X contains an infinite-dimensional subspace isomorphic to Hubert space.
R. C. James
semanticscholar   +1 more source

Generalized Hyers–Ulam Stability of Laplace Equation With Neumann Boundary Condition in the Upper Half‐Space

Mathematical Methods in the Applied Sciences, Volume 49, Issue 2, Page 521-530, 30 January 2026.
ABSTRACT This paper investigates the generalized Hyers–Ulam stability of the Laplace equation subject to Neumann boundary conditions in the upper half‐space. Traditionally, Hyers–Ulam stability problems for differential equations are analyzed by examining the system's error, particularly in relation to a forcing term.
Dongseung Kang, Hoewoon B. Kim, Dojin Kim   +2 more
wiley   +1 more source

A Dislocated Quasi-Normed Space and Its Completeness for A Fixed Point Theorem

مجلة بغداد للعلوم
A concept of a dislocated quasi-normed space is introduced in this paper which is a spatial case of the concept of a quasi-normed space and related to the notion of a dislocated quasi-metric space.
Jawad Kadhim K. Al-Delfi
doaj   +1 more source

Abstract Boundary Delay Systems and Application to Network Flow

Mathematical Methods in the Applied Sciences, Volume 49, Issue 1, Page 119-129, 15 January 2026.
ABSTRACT This paper investigates the well‐posedness and positivity of solutions to a class of delayed transport equations on a network. The material flow is delayed at the vertices and along the edges. The problem is reformulated as an abstract boundary delay equation, and well‐posedness is proved by using the Staffans–Weiss theory.
András Bátkai, Marjeta Kramar Fijavž, Abdelaziz Rhandi   +2 more
wiley   +1 more source