A Further Extension of Maps With Non-unique Fixed Points
Ljubomir Ćirić, Nikola Jotić (1998)
Matematički Vesnik
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Ljubomir Ćirić, Nikola Jotić (1998)
Matematički Vesnik
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H. K. Pathak, M. S. Khan (2002)
Archivum Mathematicum
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The purpose of this note is to provide a substantial improvement and appreciable generalizations of recent results of Beg and Azam; Pathak, Kang and Cho; Shiau, Tan and Wong; Singh and Mishra.
H. K. Pathak, Shin Min Kang, Yeol Je Cho (1998)
Czechoslovak Mathematical Journal
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In this paper we first prove some coincidence and fixed point theorems for nonlinear hybrid generalized contractions on metric spaces. Secondly, using the concept of an asymptotically regular sequence, we give some fixed point theorems for Kannan type multi-valued mappings on metric spaces. Our main results improve and extend several known results proved by other authors.
Nešić, Slobodan Č. (1995)
Matematichki Vesnik
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Huang, Xianjiu, Zhu, Chuanxi, Wen, Xi (2010)
Fixed Point Theory and Applications [electronic only]
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Ovidiu Popescu (2009)
Open Mathematics
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In this paper we prove two fixed point theorems for generalized contractions with constants in complete metric space, which are generalizations of very recent results of Kikkawa and Suzuki.
Ljubomir B. Ćirić (2000)
Czechoslovak Mathematical Journal
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Let be a closed convex subset of a complete convex metric space . In this paper a class of selfmappings on , which satisfy the nonexpansive type condition below, is introduced and investigated. The main result is that such mappings have a unique fixed point.