International Journal of Mathematics and Mathematical Sciences
Volume 27 (2001), Issue 11, Pages 701-706

An extension of a theorem of Sahab, Khan, and Sessa

A. R. Khan1 and N. Hussain2

1Department of Mathematical Sciences, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
2Center for Advanced Studies in Pure and Applied Mathematics, Bahauddin Zakariya University, Multan 60800, Pakistan

Received 20 March 2001

Copyright © 2001 A. R. Khan and N. Hussain. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A fixed point theorem of Fisher and Sessa is generalized to locally convex spaces and the new result is applied to extend a recent theorem on invariant approximation of Sahab, Khan, and Sessa.