Results 61 to 70 of about 165,981,085 (120)

Existence of solutions for differential inclusions on closed moving constraints in Banach spaces

Electronic Journal of Differential Equations, 2009
In this paper, we prove the existence of solutions to a multivalued differential equation with moving constraints. We use a weak compactness type condition expressed in terms of a strong measure of noncompactness.
Adel Mahmoud Gomaa
doaj  

Some generalizations of Darbo's fixed point theorem under weak topology features with application to a Volterra-type integral equation

Applied General Topology
In this paper, we provide some generalizations of Darbo's fixed point theorem for larger classes of contraction. Our results are investigated under the weak topology of a Banach space using the measure of weak noncompactness. The results presented in the
Mohamed Khazou, Abdelmjid Khchine
doaj   +1 more source

Encyclopedia of 2D β′‐In2Se3 Growth Using Chemical Vapor Deposition: The Effects of Synthesis Parameters Onto Material Quality

Advanced Engineering Materials, Volume 28, Issue 14, 22 July 2026.
A distinct semi‐confined inner‐tube chemical vapor deposition geometry enables reproducible, large‐area growth of phase‐pure 2D β′‐In2Se3 from InI + Se precursors. Engineering local vapor transport and optimizing precursor delivery and temperature–time conditions yield uniform continuous films.
Dasun P. W. Guruge, P. Sanju S. Panawala, Joseph F. S. Fernando, Zhenhuan Chen, Chao Zhang, Dong‐Chen Qi, Liangzhi Kou, Konstantin L. Firestein, Dmitri V. Golberg   +8 more
wiley   +1 more source

On a Nonlinear Integral Equation with Contractive Perturbation

Advances in Difference Equations, 2011
We get an existence result for solutions to a nonlinear integral equation with contractive perturbation by means of Krasnoselskii's fixed point theorem and especially the theory of measure of weak noncompactness.
Zhu Huan
doaj  

Measures of Weak Noncompactness and Fixed Point Theory for 1-Set Weakly Contractive Operators on Unbounded Domains

Analysis in Theory and Applications, 2011
Summary: The main purpose of this paper is to prove a collection of new fixed point theorems and existence theorems for the nonlinear operator equation \(F (x)=\alpha x\) (\(\alpha\geq 1\)) for so-called 1-set weakly contractive operators on unbounded domains in Banach spaces.
Xu, Shaoyuan, Ben Amar, Afif
openaire   +2 more sources

An elegant model of the geodesic flow on the modular surface

Journal of the London Mathematical Society, Volume 114, Issue 1, July 2026.
Abstract Caroline Series' [The modular surface and continued fractions, J. Lond. Math. Soc. (2), 31, no. 1, (1985), 69–80] gives a clear framework linking, in a deceptively simple way, the dynamics of the geodesic flow on the modular surface with the dynamics of the regular continued fraction, through a well‐chosen symbolic coding.
Pierre Arnoux, Thomas A. Schmidt
wiley   +1 more source

An application of a measure of noncompactness in the study of asymptotic stability [PDF]

, 2003
Using the technique of fixed-point theorem of Darbo type associated with measures of noncompactness, we obtain an existence result for some functional-integral equation. Moreover, the choice of suitable measure of noncompactness allows us to characterize
Banaś, J., Rzepka, B.
core   +1 more source

On the Meaning of Localization in Non‐Local Quantum Field Theory

Annalen der Physik, Volume 538, Issue 6, June 2026.
In non‐local quantum field theory nature does not necessarily allow objects or events to be localized to exact mathematical points. Instead any physical measurement has a built‐in finite resolution set by the non‐locality scale. Spacetime remains continuous and Lorentz‐covariant, but below this scale pointlike localization becomes an idealization ...
E. J. Thompson
wiley   +1 more source

On different type of fixed point theorem for multivalued mappings via measure of noncompactness

, 2018
In this paper by using the measure of noncompactness concept, we present new fixed point theorems for multivalued maps. In further we introduce a new class of mappings which are general than Meir-Keeler mappings.
KARAKAYA, Vatan, Nour El Houda Bouzara, Vatan Karakaya, BOUZARA, Nour El Houda   +3 more
core   +1 more source

An extended definition of Anosov representation for relatively hyperbolic groups

Journal of Topology, Volume 19, Issue 2, June 2026.
Abstract We define a new family of discrete representations of relatively hyperbolic groups which unifies many existing definitions and examples of geometrically finite behavior in higher rank. The definition includes the relative Anosov representations defined by Kapovich–Leeb and Zhu, and Zhu–Zimmer, as well as holonomy representations of various ...
Theodore Weisman
wiley   +1 more source