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This article is cited in 8 scientific papers (total in 8 papers)
Continuous Approximations of Multivalued Mappings and Fixed Points
B. D. Gel'man Voronezh State University
Abstract:
In the present paper, we prove a fixed-point theorem for completely continuous multivalued mappings defined on a bounded convex closed subset $X$ of the Hilbert space $H$ which satisfies the tangential condition $F(x)\cap(x+T_X(x))\ne\varnothing$, where $T_X(x)$ is the cone tangent to the set $X$ at a point $x$. The proof of this theorem is based on the method of single-valued approximations to multivalued mappings. In this paper, we consider a simple approach for constructing single-valued approximations to multivalued mappings. This approach allows us not only to simplify the proofs of already-known theorems, but also to obtain new statements needed to prove the main theorem in this paper.
Received: 29.10.2002 Revised: 25.10.2004
Citation:
B. D. Gel'man, “Continuous Approximations of Multivalued Mappings and Fixed Points”, Mat. Zametki, 78:2 (2005), 212–222; Math. Notes, 78:2 (2005), 194–203
Linking options:
https://www.mathnet.ru/eng/mzm2649https://doi.org/10.4213/mzm2649 https://www.mathnet.ru/eng/mzm/v78/i2/p212
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