FIXED-POINTS OF GENERALIZED CONTRACTIVE MULTIVALUED MAPPINGS

被引:156
作者
DAFFER, PZ [1 ]
KANEKO, H [1 ]
机构
[1] OLD DOMINION UNIV,DEPT MATH & STAT,NORFOLK,VA 23529
关键词
D O I
10.1006/jmaa.1995.1194
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In a recent paper N. Mizoguchi and W. Takahashi gave a positive answer to the conjecture of S. Reich concerning the existence of fixed points of multi-valued mappings that satisfy a certain contractive condition. In this paper, we provide an alternative and somewhat more straightforward proof for the theorem of Mizoguchi and Takahashi. Also the problems associated with fixed points of weakly contractive multi-valued mappings are studied. Finally, we make a few comments that improve other results from their paper (J. Math. Anal. Appl. 141 (1989), 177-188). (C) 1995 Academic Press, Inc.
引用
收藏
页码:655 / 666
页数:12
相关论文
共 9 条
[1]   FIXED-POINT THEOREMS FOR SET-VALUED MAPPINGS OF CONTRACTIVE TYPE [J].
ASSAD, NA ;
KIRK, WA .
PACIFIC JOURNAL OF MATHEMATICS, 1972, 43 (03) :553-562
[3]   FIXED-POINT THEOREMS FOR MAPPINGS SATISFYING INWARDNESS CONDITIONS [J].
CARISTI, J .
TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY, 1976, 215 (JAN) :241-251
[4]  
Dugundji J, 1978, B GREEK MATH SOC, V19, P141
[5]  
Kaneko H., 1988, MATH JAPON, V33, P57
[6]  
Kaneko H., 1986, MATH JPN, V31, P407
[7]   FIXED-POINT THEOREMS FOR MULTIVALUED MAPPINGS ON COMPLETE METRIC-SPACES [J].
MIZOGUCHI, N ;
TAKAHASHI, W .
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, 1989, 141 (01) :177-188
[8]   MULTI-VALUED CONTRACTION MAPPINGS [J].
NADLER, SB .
PACIFIC JOURNAL OF MATHEMATICS, 1969, 30 (02) :475-&
[9]  
Reich S., 1983, CONTEMP MATH-SINGAP, V21, P179