Coincidence point theorems for multivalued mappings.
Chang, Shihsen, Peng, Yongcheng (1993)
International Journal of Mathematics and Mathematical Sciences
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Chang, Shihsen, Peng, Yongcheng (1993)
International Journal of Mathematics and Mathematical Sciences
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Cho, Y.J., Fisher, B., Genga, G.S. (1997)
International Journal of Mathematics and Mathematical Sciences
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Kaneko, Hideaki, Sessa, Salvatore (1989)
International Journal of Mathematics and Mathematical Sciences
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Singh, Shynam Lal, Ha, Ki Sik, Cho, Yeol Je (1989)
International Journal of Mathematics and Mathematical Sciences
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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.
R. A. Rashwan, Magdy A. Ahmed (2002)
Archivum Mathematicum
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This work is considered as a continuation of [19,20,24]. The concepts of -compatibility and sub-compatibility of Li-Shan [19, 20] between a set-valued mapping and a single-valued mapping are used to establish some common fixed point theorems of Greguš type under a -type contraction on convex metric spaces. Extensions of known results, especially theorems by Fisher and Sessa [11] (Theorem B below) and Jungck [16] are thereby obtained. An example is given to support our extension. ...
Hicks, Troy, Rhoades, B.E. (1992)
International Journal of Mathematics and Mathematical Sciences
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Mohamed Akkouchi (2011)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
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In the setting of a b-metric space (see [Czerwik, S.: Contraction mappings in b-metric spaces Acta Math. Inform. Univ. Ostraviensis 1 (1993), 5–11.] and [Czerwik, S.: Nonlinear set-valued contraction mappings in b-metric spaces Atti Sem. Mat. Fis. Univ. Modena 46, 2 (1998), 263–276.]), we establish two general common fixed point theorems for two mappings satisfying the (E.A) condition (see [Aamri, M., El Moutawakil, D.: Some new common fixed point theorems under strict contractive conditions...