Results 51 to 60 of about 175,704,569 (186)

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

open access: yesProceedings 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   +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

open access: yesChemPhysChem, 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   +12 more
wiley   +1 more source

A Study of Positive Solutions for Semilinear Fractional Measure Driven Functional Differential Equations in Banach Spaces

open access: yesMathematics
In this paper, we deal with the delayed measure differential equations with nonlocal conditions via measure of noncompactness in ordered Banach spaces. Combining (β,γk)-resolvent family, regulated functions and fixed point theorem with respect to convex ...
Jing Zhang, Haide Gou
doaj   +1 more source

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

open access: yesChemElectroChem, 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   +4 more
wiley   +1 more source

Study on Corrosion and Thermal Alteration of MgAl2O4 and MgO Ceramics With Lead at 750 °C for Use in High‐Temperature Thermal Energy Storage

open access: yesEnergy Technology, Volume 14, Issue 10, October 2026.
The chemical compatibility of five commercial ceramics with varying MgO and Al2O3 content is studied in contact with liquid lead (Pb) at 700 °C for potential use in high‐temperature Pb‐based thermal energy storage. After 1008 h of static exposure, the samples are analyzed using a scanning electron microscope coupled with energy‐dispersive spectroscopy ...
Margaux Zehnder   +3 more
wiley   +1 more source

Hausdorff Measure of Noncompactness of Matrix Mappings on Certain Difference Sequence Spaces

open access: yes, 2022
The well-known difference sequence spaces were introduced by Kızmaz [16] in 1981 and have been generalized by many authors uptill now. These spaces were extended for the first time by Sarıgöl [30] to the sequence spaces l∞(∆q), c(∆q) and c0(∆q).
Gökçe, Fadime, Fadime Gökçe
core   +1 more source

MEASURE OF NON-COMPACTNESS IN THE LORENTZ SPACES

open access: yesНаучный вестник МГТУ ГА, 2016
Geometric characteristics of regular spaces are determined. Examples of regular spaces are the Lebesgue and Lorentz spaces, in particular. For the Lorentz spaces an inequality for arbitrary subsets, connecting the measures of noncompactness and are ...
N. A. Erzakova
doaj  

Continuity of modulus of noncompact convexity for minimalizable measures of noncompactness

open access: yes, 2015
We consider the modulus of noncompact convexity $Δ_{X,ϕ}(\varepsilon)$ associated with the minimalizable measure of noncompactness $ϕ$. We present some properties of this modulus, while the main result of this paper is showing that $Δ_{X,ϕ}(\varepsilon)$ is a subhomogenous and continuous function on $[0,ϕ(\bar{B}_X))$ for an arbitrary minimalizable ...
Rekić-Vuković, Amra   +3 more
openaire   +3 more sources

A Coarse Geometric Approach to Graph Layout Problems

open access: yesJournal of Graph Theory, Volume 113, Issue 2, Page 169-194, October 2026.
ABSTRACT We define a range of new coarse geometric invariants based on various graph–theoretic measures of complexity for finite graphs, including treewidth, pathwidth, cutwidth and bandwidth. We prove that, for bounded degree graphs, these invariants can be used to define functions which satisfy a strong monotonicity property, namely, they are ...
Wanying Huang   +3 more
wiley   +1 more source

Measure of noncompactness of operators and matrices on the spaces c and c0 [PDF]

open access: yes, 2006
In this note, using the Hausdorff measure of noncompactness, necessary and sufficient conditions are formulated for a linear operator and matrices between the spaces c and c0 to be compact.
Eberhard Malkowsky   +3 more
core   +1 more source

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