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JOURNALS // Funktsional'nyi Analiz i ego Prilozheniya // Archive

Funktsional. Anal. i Prilozhen., 2002 Volume 36, Issue 2, Pages 89–92 (Mi faa197)

This article is cited in 34 papers

Brief communications

Fixed Points of Multivalued Contractions

P. V. Semenov

Moscow City Pedagogical University, Mathematical Department

Abstract: A fixed-point theorem is proved for a broad class of closed-valued $k(\;\cdot\;)$-contractions with $\limsup_{s\to t+0}k(s)<1$ for any positive $t$ and with $\limsup_{s\to0+0}k(s)=1$.

Keywords: multivalued contraction, fixed point, Reich's problem, $G$-summable function.

UDC: 517.988.52

Received: 30.11.2000

DOI: 10.4213/faa197


 English version:
Functional Analysis and Its Applications, 2002, 36:2, 159–161

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