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Mathematical Communications, Vol.13 No.1 May 2008.

Original scientific paper

Common fixed point theorems through generalized altering distance functions

K. P. R. Rao ; Department of Applied Mathematics, Acharya Nagarjuna University-Nuzvid Campus, India
G. Ravi Babu ; Department of Applied Mathematics, Acharya Nagarjuna University-Nuzvid Campus, India
D. Vasu Babu ; Department of Applied Mathematics, Acharya Nagarjuna University-Nuzvid Campus, India

Fulltext: pdf (111 KB), English, Pages 67 - 73 , downloads: 621 *

Abstracts
In this paper we obtain a unique common fixed point theorem,
for four self maps using a generalized altering distance function in four variables , which generalizes and improves the main theorem of Choudhury [2].
We also obtain a Gregus type common fixed point theorem for four maps as a corollary.

Keywords
fixed points, semi compatible mappings, altering distance functions

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