Results 101 to 110 of about 4,748 (237)
A Note on Brondsted's Fixed Point Theorem
, 2023 We show that for the case of uniformly convex Banach spaces the conditions of the Brondsted fixed point theorem can be ...
Zubelevich, Oleg
core
Spreading Speed for a Vector‐Borne Disease System on Non‐Coincident Straight Infinite Cylinders
Studies in Applied Mathematics, Volume 156, Issue 6, June 2026.ABSTRACT Vector‐borne diseases remain an increasing global public health concern. In this work, we investigate the spreading speed of vector‐borne disease via a four‐component reaction–diffusion system posed on non‐coincident straight infinite cylinders, which stands for an unconventional spatial configuration.
Arnaud Ducrot +2 more
wiley +1 more source
, 1995 We prove a fixed point theorem of Furi Pera type for condensing operators. This will then be used to establish the existence of solutions to certain integral equations of Hammerstein type in Banach ...
O'Regan, D.
core +2 more sources
On an improved restricted reverse weak‐type bound for the maximal operator
Bulletin of the London Mathematical Society, Volume 58, Issue 6, June 2026.Abstract We obtain an improved lower bound for the restricted reverse weak‐type estimate of the Hardy–Littlewood maximal operator M$M$. This result is applied to the λ$\lambda$‐median maximal operator mλ$m_{\lambda }$ acting on a Banach function space X$X$.
Andrei K. Lerner
wiley +1 more source
Some Generalizations of Mulit-Valued Version of Schauder’s Fixed Point Theorem with Applications
Cubo, 2010 In this article, a generalization of a Kakutani-Fan fixed point theorem for multi-valued mappings in Banach spaces is proved under weaker upper semi-continuity condition and it is further applied to derive a generalized version of Krasnoselskii’s fixed ...
BAPURAO C DHAGE
doaj
In this work, we study the Banach Fixed Point Theorem with a view to having an insight into the implication of varied contraction constants for a family of contraction maps. We prove the existence of fixed points of a family of contraction operators defined on a complete metric space.
openaire +1 more source
Stable factorization of the Calderón problem via the Born approximation
Journal of the London Mathematical Society, Volume 113, Issue 6, June 2026.Abstract In this article, we prove the existence of the Born approximation in the context of the radial Calderón problem for Schrödinger operators. The Born approximation naturally appears as the linear component of a factorization of the Calderón problem; we show that the nonlinear part, obtaining the potential from the Born approximation, enjoys ...
Thierry Daudé +3 more
wiley +1 more source
Abstract and Applied Analysis, 2013 We prove the existence and uniqueness of solutions for two classes of infinite delay nonlinear fractional order differential equations involving Riemann-Liouville fractional derivatives.
Azizollah Babakhani +2 more
doaj +1 more source
Existence Analysis of a Three‐Species Memristor Drift‐Diffusion System Coupled to Electric Networks
Mathematical Methods in the Applied Sciences, Volume 49, Issue 8, Page 8095-8117, 30 May 2026.ABSTRACT The existence of global weak solutions to a partial‐differential‐algebraic system is proved. The system consists of the drift‐diffusion equations for the electron, hole, and oxide vacancy densities in a memristor device, the Poisson equation for the electric potential, and the differential‐algebraic equations for an electric network.
Ansgar Jüngel, Tuấn Tùng Nguyến
wiley +1 more source
PLoS ONEIn this research paper, we investigate the existence and uniqueness of solutions for neutral functional differential equations with sequential fractional orders, specifically involving the [Formula: see text]-Caputo operator.
Rabah Debbar +4 more
doaj +1 more source