Results 41 to 50 of about 173,323,789 (179)
Energy 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
Generalized measures of noncompactness of sets and operators in Banach spaces
, 2010 New measures of noncompactness for bounded sets and linear operators, in the setting of abstract measures and generalized limits, are constructed. A quantitative version of a classical criterion for compactness of bounded sets in Banach spaces by R.
da Silva, EB +3 more
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Measures of noncompactness over hilbert C-modules
, 2019 U prvom poglavlju izlaž se teorija o uniformnim prostorima i merama nekompaktnosti na metričkim i uniformnim prostorima...In the first section we present the theory on uniform spaces and measures of noncompactness in metric and uniform spaces..
Lazović, Zlatko
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Impulsive fractional differential equations in Banach spaces
Electronic Journal of Qualitative Theory of Differential Equations, 2009 This paper is devoted to study the existence of solutions for a class of initial value problems for impulsive fractional differential equations involving the Caputo fractional derivative in a Banach space. The arguments are based upon Mönch's fixed point
Mouffak Benchohra, Djamila Seba
doaj +1 more source
Continuity of modulus of noncompact convexity for minimalizable measures of noncompactness
, 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
Measures of noncompactness on the standard hilbert C*-module
Filomat, 2019 We define a measure of noncompactness ? on the standard Hilbert C*-module l2(A) over a unital C*-algebra, such that ?(E) = 0 if and only if E is A-precompact (i.e. it is ?-close to a finitely generated projective submodule for any ? > 0) and derive its properties.
Dragoljub Keckic, Zlatko Lazovic
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A Coarse Geometric Approach to Graph Layout Problems
Journal 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
Fixed points for $F$-expanding mappings in the sense of measures of noncompactness [PDF]
, 2023 In this article, we model with measures of noncompactness the well-known concept of F-expanding mappings given by Gornicki (Fixed Point Theory Appl 2017, 9 (2016)).
Moutawakil, Driss El +2 more
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Solvability of integral equations via the technique of measures of noncompactness
Miskolc Mathematical NotesMotivated by the work of [Mohammadi et al., Mathematics, 2019, 7, 575.], we extend here Darbo’s fixed point theorem in a Banach space using the combined technique of Wardowski-Mizoguchi-Takahashi contraction.
Babak Mohammadi +2 more
doaj +1 more source
Journal of Mathematics, 2021 In this work, a new existence result is established for a nonlocal hybrid boundary value problem which contains one left Caputo and one right Riemann–Liouville fractional derivatives and integrals.
Ayub Samadi +2 more
doaj +1 more source