International Journal of Mathematics and Mathematical Sciences 
Volume 27 (2001), Issue 12, Pages 759-764
doi:10.1155/S0161171201005920

Results on common fixed points

Zeqing Liu1 and Jeong Sheok Ume2

 1Department of Mathematics, Liaoning Normal University, Liaoning, Dalian 116029, China
2Department of Applied Mathematics, Ghangwon National University, Changwon 641-773, Korea
Received 9 October 2000

Abstract

We establish common fixed point theorems related with families of self mappings on metric spaces. Our results extend, improve, and unify the results due to Fisher (1977, 1978, 1979, 1981, 1984), Jungck (1988), and Ohta and Nikaido (1994).