Results 201 to 210 of about 12,683 (242)
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Nonlinear and Multivalued Maps
2016Let X and Y be two Banach spaces, let \(D \subseteq X\) be a set, and let \(f: D\longrightarrow Y\) be a map.
Leszek Gasiński +1 more
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On the degree theory for multivalued (S+) type mappings
Applied Mathematics and Mechanics, 1998The authors construct an approximate degree theory for a class of multivalued mappings of the form \(F= L+S\) from the domain \(D(L)\) in a real reflexive Banach space \(X\) to its dual space \(X^*\), where \(L\) is a closed densely defined maximal monotone operator and \(S\) is a multivalued map of class \((S+)\) with respect to the graph norm ...
Liu, Zhenhai, Zhang, Shisheng
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Multivalued Possibilities Mappings
1990Abstraction mappings are one of the major tools used to construct correctness proofs for concurrent algorithms. Several examples are given of situations in which it is useful to allow the abstraction mappings to be multivalued. The examples involve algorithm optimization, algorithm distribution, and proofs of time bounds.
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Multivalued -weakly Picard mappings
Nonlinear Analysis: Theory, Methods & Applications, 2007By introducing the concept of multi-valued \(f\)-weak contraction and generalized multi-valued \(f\)-weak contraction, the author obtains two coincidence fixed point theorems which include, in particular, two common fixed point theorems. If \(f=I\), the identity map, one obtains the results co-authored by the reviewer: \textit{M. Berinde} and \textit{V.
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Polyhedral Multivalued Mappings: Properties and Applications
Siberian Mathematical Journal, 2020zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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APPROXIMATING FIXED POINTS OF MULTIVALUED MAPPINGS
JP Journal of Fixed Point Theory and Applications, 2018Summary: An Ishikawa iteration scheme is used for a pair of multivalued operators to establish a fixed point theorem under \((\psi,\phi)\)-weak contraction.
Gairola, U. C., Krishan, Ram
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On Some Generalization of Multivalued Nonexpansive Mappings
Bulletin of the Iranian Mathematical Society, 2019zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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On a Class of Multivalued Mappings in Banach Spaces
Canadian Mathematical Bulletin, 1972A. Granas [4] has studied single-valued compact vector fields in Banach spaces. In [3], he extended the fixed point theorems of Roth, Boknenblust and Karlin to the case of multi-valued functions. Closely following [4], we give here some general theorems in a class of multi-valued functions in Banach spaces.
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On variational inequalities with multivalued mappings
The authors study variational inequalities with the multivalued mappings which form a new class of mathematical problems. The theorems on existence of solutions to the problem are given. Properties of sets of solutions to the problem are studied.Mel'nik, V. S., Solonukha, O. V.
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