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Measure of non-compactness and multivalued mappings in complete metric topological vector spaces - MaRDI portal

Measure of non-compactness and multivalued mappings in complete metric topological vector spaces (Q1072157)

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scientific article; zbMATH DE number 3942491
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English
Measure of non-compactness and multivalued mappings in complete metric topological vector spaces
scientific article; zbMATH DE number 3942491

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    Measure of non-compactness and multivalued mappings in complete metric topological vector spaces (English)
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    1985
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    The author generalizes a theorem of Kuratowski to the following: In a complete metric space any family \(\{\) \(F\}\) of closed subsets having the finite intersection property and for which inf \(\alpha\) (F)\(=0\), has a non-empty compact intersection, where \(\alpha\) (F) is the measure of non- compactness of F. He then applies this result to KKM set-valued maps introduced by \textit{J. Dugundji} and \textit{A. Granas} [Ann. Sc. Norm. Sup. Pisa, Cl. Sci., IV. Ser. 5, 679-682 (1978; Zbl 0396.47037)].
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    complete metric space
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    measure of non-compactness
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    KKM set-valued maps
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