Results 1 to 10 of about 8,228 (244)
Eigenvalue Problems for Fredholm Operators with Set-Valued Perturbations [PDF]
Advanced Nonlinear Studies, 2020 By means of a suitable degree theory, we prove persistence of eigenvalues and eigenvectors for set-valued perturbations of a Fredholm linear operator.
Benevieri Pierluigi, Iannizzotto Antonio
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Generalized -Cocoercive Operators and Generalized Set-Valued Variational-Like Inclusions [PDF]
Journal of Mathematics, 2013 We investigate a new class of cocoercive operators named generalized -cocoercive operators in Hilbert spaces. We prove that generalized -cocoercive operator is single-valued and Lipschitz continuous and extends the concept of resolvent operators associated with -cocoercive operators to the generalized -cocoercive operators.
Shamshad Husain +2 more
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Operators Based On Multiple Generalized Set-Valued Neutrosophic Quadruple Sets [PDF]
Neutrosophic Sets and SystemsIn this study, as a generalized form of multiple valued neutrosophic numbers and neutrosophic quadruple numbers, multiple generalized set-valued neutrosophic quadruple numbers and sets are defined and their basic properties are given.
Abdullah Kargın +2 more
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On Lipschitzian operators of substitution generated by set-valued functions [PDF]
Opuscula Mathematica, 2007 We consider the Nemytskii operator, i.e., the operator of substitution, defined by \((N \phi)(x):=G(x,\phi(x))\), where \(G\) is a given multifunction. It is shown that if \(N\) maps a Hölder space \(H_{\alpha}\) into \(H_{\beta}\) and \(N\) fulfils the ...
Jakub Jan Ludew
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On Interpolative Prešić-Type Set-Valued Contractions
Journal of Mathematics, 2022 This study aims to present the notions of interpolative Prešić-type set-valued contractions for the set-valued operators defined on product spaces.
Monairah Alansari +2 more
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Complex & Intelligent Systems, 2023 The complex interval-valued intuitionistic fuzzy set (CIIFS), as an extension of the complex intuitionistic fuzzy set (CIFS), is one of the better tools for dealing with time-periodic information in a single set of two-dimensional information.
Muhammad Sajjad Ali Khan +4 more
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Several Theorems on Single and Set-Valued Prešić Type Mappings
Mathematics, 2020 In this study, we introduce set-valued Prešić type almost contractive mapping, Prešić type almost F-contractive mapping and set-valued Prešić type almost F-contractive mapping in metric space and prove some fixed point results for these mappings ...
Seher Sultan Yeşilkaya, Cafer Aydın
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Random fixed points of set-valued operators [PDF]
Proceedings of the American Mathematical Society, 1996 Summary: Some random fixed point theorems for set-valued operators are obtained. The measurability of certain marginal maps is also studied. The underlying measurable space is not assumed to be a Suslin family.
Domínguez Benavides, Tomás +2 more
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Set-valued perturbation for time dependent subdifferential operator [PDF]
Topological Methods in Nonlinear Analysis, 2015 In a separable Hilbert space, we consider an evolution inclusion involving time-dependent subdifferential of a proper convex lower semicontinuous function with a set-valued perturbation depending on both time and state variable. We prove, under a compactness condition on the perturbation, that there exists at least one absolutely continuous solution.
Saïdi, Soumia, Yarou, Mustapha Fateh
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Axioms, 2022 Many fuzzy concepts have been researched and described with uncertain information. Collecting data under uncertain information is a difficult task, especially when there is a difference between the opinions of experts.
Ansa Ashraf +5 more
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