Results 31 to 40 of about 195,474,842 (108)
Cauchy’s problem and measure of noncompactness
, 2023 In This Work, we study the notion the measure of noncompactness and we applied to the fractional differential equations on the goal to proof the existence of solution using fixed point theory combined with the Kuratouskii measure of ...
Encadreur: GAGUI, Bachir +1 more
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Hausdorff measure of noncompactness in some sequence spaces of a triple band matrix [PDF]
, 2013 The sequence spaces c(0)(B), l(infinity)(B) have recently been introduced by Somez (Comput. Math. Appl. 62: 641-650, 2011). In this paper, we establish some identities or estimates for the operator norms and the Hausdorff measures of noncompactness of ...
Ali Karaisa, Karaisa, Ali
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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 +4 more
wiley +1 more source
The class of F-contraction mappings with a measure of noncompactness
, 2017 In this chapter we review a class of contraction conditions, which are largely used to obtain interesting generalizations of the Banach fixed-point theorem in various abstract settings.
Francesca Vetro +3 more
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A Test Function Method for Weakly Coupled Systems With Derivative‐Type Nonlinearity
Mathematische Nachrichten, Volume 299, Issue 10, Page 3015-3035, October 2026.ABSTRACT We consider a two by two system of inequalities which include fractional powers of the Laplace operator, coupled through a semilinear term of derivative type. We prove the nonexistence of global‐in‐time weak solutions for powers below the critical curve and possibly on the critical curve.
Marcello D'Abbicco, Antonio Lagioia
wiley +1 more source
Measures of noncompactness on w-distance spaces [PDF]
, 2021 The aim of this paper is to provide a new framework for the study of measures of noncompactness in generalized metric spaces. Firstly, we introduce the notion of w-measure of noncompactness on metric spaces with a w-distance and extend the diameter and ...
Kostić Aleksandar, Aleksandar Kostić
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Existence and asymptotic stability of continuous solutions for integral equations of product type
Journal of Innovative Applied Mathematics and Computational Sciences, 2021 In this paper, we study the existence of a continuous solution for a nonlinear integral equation of a product type. The analysis uses the techniques of measures of noncompactness and Darbo's fixed point theorem.
Mahmoud Bousselsal, Azzeddine Bellour
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Elucidating the Stem of Crassulaceae: A Structural Chemical‐Anatomical Analysis
Plant Direct, Volume 10, Issue 10, October 2026.ABSTRACT Crassulaceae comprises succulent species characterized by extensive water‐storage tissues and considerable anatomical diversity, yet comparative information on the chemical composition and structural organization of their stem cell walls remains limited. This study characterized stem cell‐wall composition and anatomy in 33 Crassulaceae species
Agustín Maceda +4 more
wiley +1 more source
, 2020 Under the idea of a measure of noncompactness, some fixed point results are proposed and a generalization of Darbo’s fixed point theorem is given in this manuscript.
Amal A. Khalil, Hasanen A. Hammad
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Systematic studies on the fatigue deformation and damage mechanisms of nickel‐based single‐crystal superalloys (Ni‐SXs) under combined thermal and mechanical conditions remain limited, particularly regarding the influence of strain amplitude on the relative contributions of fatigue and oxidation damage.
Liyin Zhang +7 more
wiley +1 more source