Fixed point theorems for set-valued Y-contractions
Ioan A. Rus, Adrian Petruşel, Gabriela Petruşel (2007)
Banach Center Publications
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The purpose of this paper is to present several fixed point theorems for the so-called set-valued Y-contractions. Set-valued Y-contractions in ordered metric spaces, set-valued graphic contractions, set-valued contractions outside a bounded set and set-valued operators on a metric space with cyclic representations are considered.