Title
Minimization theorems and fixed point theorems in generating spaces of quasi-metric family
Abstract
By following the approaches of Kada et al. [13], we define a family of weak quasi-metrics in a generating space of quasi-metric family. By using a family of weak quasi-metrics, we prove a Takahashi-type minimization theorem, a generalized Ekeland Variational principle and a general Caristi-type fixed point theorem for set-valued maps in complete generating spaces of quasi-metric family. Also, by following the approach of Aubin [11],we prove another fixed point theorem for set-valued maps in complete generating spaces of quasi-metric family without the assumption of lower semicontinuity. From our results in complete generating spaces of quasi-metric family, we obtain the corresponding theorems for set-valued maps in complete fuzzy metric spaces. (C) 1999 Elsevier Science B.V. All rights reserved.
Year
DOI
Venue
1999
10.1016/S0165-0114(97)00034-1
Fuzzy Sets and Systems
Keywords
DocType
Volume
membership function,analysis,variational principle,fixed point theorem
Journal
101
Issue
ISSN
Citations 
1
0165-0114
2
PageRank 
References 
Authors
0.50
1
4
Name
Order
Citations
PageRank
Gue-Myung Lee130.86
Byung Soo Lee2216.34
Jong Soo Jung3196.15
Shih-sen Chang410023.12