Results 31 to 40 of about 173,323,789 (179)

Proper affine deformations of positive representations

Journal of Topology, Volume 19, Issue 4, December 2026.
Abstract We define, for every positive Anosov representation of a nonabelian free group into SO(2n,2n−1)$\mathrm{SO}(2n,2n-1)$, a family of R4n−1$\mathbb {R}^{4n-1}$‐valued cocycles which induce proper affine actions on R4n−1$\mathbb {R}^{4n-1}$. We construct fundamental domains in R4n−1$\mathbb {R}^{4n-1}$ bounded by generalized crooked planes for ...
Jean‐Philippe Burelle, Neža Žager Korenjak   +1 more
wiley   +1 more source

Weak Solutions for Nonlinear Fractional Differential Equations in Banach Spaces

Discrete Dynamics in Nature and Society, 2012
We discuss the existence of weak solutions for a nonlinear boundary value problem of fractional differential equations in Banach space. Our analysis relies on the Mönch's fixed point theorem combined with the technique of measures of weak noncompactness.
Wen-Xue Zhou, Ying-Xiang Chang, Hai-Zhong Liu   +2 more
doaj   +1 more source

The Legendrian Hopf link has exactly two Lagrangian fillings

Journal of Topology, Volume 19, Issue 4, December 2026.
Abstract We prove that there are precisely two embedded exact Lagrangian fillings of the standard Legendrian Hopf link, up to compactly supported Hamiltonian isotopy. It was known that the standard Legendrian Hopf link admitted at least two such Lagrangian fillings: we show these are all.
Bryce Thomson
wiley   +1 more source

Hyperbolicity and fundamental groups of complex quasi‐projective varieties (III): Applications

Proceedings of the London Mathematical Society, Volume 133, Issue 5, November 2026.
Abstract This paper is Part III of a series of three. We begin by introducing the notion of h$h$‐special varieties, which can be seen as varieties “chain‐connected by the Zariski closures of entire curves.” We prove that if X$X$ is either a special smooth complex quasi‐projective variety in the sense of Campana or an h$h$‐special variety, then for any ...
Benoît Cadorel, Ya Deng, Katsutoshi Yamanoi   +2 more
wiley   +1 more source

Phospholipid Monolayers and Vesicular Membranes Show Only Minor Structural Changes After Interaction With α$\alpha$‐Synuclein at Low and Physiological Concentrations

ChemPhysChem, Volume 27, Issue 20, 28 October 2026.
The interaction of α$\alpha$‐synuclein with lipid membranes in the synapse is intensively discussed in view of pathologies of neurodegeneration. By X‐ray diffraction from monolayer, lipid vesicles, and synaptic vesicles at different α$\alpha$‐synuclein concentrations, structural changes of the membrane can be probed in response to the interaction.
András Major, Eva von Campenhausen, Riko Hilger, Hendrik Bruns, Titus Czajka, Diego Pontoni, Martin Rosenthal, Gerard Aguilar Pérez, Christian Hoffmann, Mohammed Al‐Azzani, Tiago F. Outeiro, Dragomir Milovanovic, Tim Salditt   +12 more
wiley   +1 more source

Solutions of a quadratic Volterra–Stieltjes integral equation in the class of functions converging at infinity

Electronic Journal of Qualitative Theory of Differential Equations, 2018
The paper deals with the study of the existence of solutions of a quadratic integral equation of Volterra–Stieltjes type. We are looking for solutions in the class of real functions continuous and bounded on the real half-axis $\mathbb{R}_+$ and ...
Jozef Banas, Agnieszka Dubiel
doaj   +1 more source

Existence and controllability of integrodifferential equations with non-instantaneous impulses in Fréchet spaces

Cubo, 2023
In this paper, we investigate existence of mild solutions to a non-instantaneous integrodifferential equation via resolvent operators in the sense of Grimmer in Fréchet spaces. Utilizing the technique of measures of noncompactness in conjunction with the
Abdelhamid Bensalem, Abdelkrim Salim, Bashir Ahmad, Mouffak Benchohra   +3 more
doaj   +1 more source

Engineering Tin Foam Electrodes for High‐Rate CO2 Reduction: A Pathway to Sustainable Formic Acid Production

ChemElectroChem, Volume 13, Issue 19, 1 October 2026.
Highly porous Sn foam electrodes prepared by dynamic hydrogen bubble template exhibit high selectivity for CO2 reduction to formic acid. No decline of catalytic activity or selectivity, or morphological modifications were observed after long‐term electrolysis operating at high current densities.
Andrea Antonello, Ermanno Pierobon, Marco Fantin, Giulia Stefan, Abdirisak A. Isse   +4 more
wiley   +1 more source

Measures of noncompactness in Lipschitz Banach algebra and application to quadratic fractional integral equation

Fixed Point Theory and Algorithms for Sciences and Engineering
In this paper, we introduce the Banach algebra on unbounded interval that satisfies the lipschitz condition, next we define measures of noncompactness in this space.
Hojjatollah Amiri Kayvanloo, Mohammad Mursaleen, Ömer Kişi   +2 more
doaj   +1 more source

Boundary Value Problems for Hybrid Caputo Fractional Differential Equations

Mathematics, 2019
In this paper, we discuss the existence of solutions for a hybrid boundary value problem of Caputo fractional differential equations. The main tool used in our study is associated with the technique of measures of noncompactness.
Zidane Baitiche, Kaddour Guerbati, Mouffak Benchohra, Yong Zhou   +3 more
doaj   +1 more source