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This article is cited in 5 scientific papers (total in 5 papers)
MATHEMATICS
Zero preservation for a family of multivalued functionals, and applications to the theory of fixed points and coincidences
Yu. N. Zakharyan, T. N. Fomenko Lomonosov Moscow State University, Moscow, Russian Federation
Abstract:
A theorem on the zero existence preservation for a parametric family of multivalued $(\alpha,\beta)$-search functionals on an open subset of a metric space is proved. Several corollaries on the existence preservation for preimages of a closed subspace, for coincidence points, and for common fixed points under the action of a parametric family (a number of families) of mappings are obtained. The notion of a Zamfirescu-type pair of mappings is introduced, and a coincidence theorem for such pairs of mappings is obtained. In addition, a theorem on the coincidence existence preservation for a parametric family of such pairs of mappings is obtained. The obtained results imply several well-known theorems.
Keywords:
parametric family of functionals, multivalued mapping, fixed point, coincidence point, Zamfirescu mapping, Zamfirescu-type pair of mappings
preservation of coincidence existence, parametric family of mappings.
Citation:
Yu. N. Zakharyan, T. N. Fomenko, “Zero preservation for a family of multivalued functionals, and applications to the theory of fixed points and coincidences”, Dokl. RAN. Math. Inf. Proc. Upr., 493 (2020), 13–17; Dokl. Math., 102:1 (2020), 272–275
Linking options:
https://www.mathnet.ru/eng/danma87 https://www.mathnet.ru/eng/danma/v493/p13
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Abstract page: | 107 | Full-text PDF : | 35 | References: | 17 |
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