International Journal of Mathematics and Mathematical Sciences
Volume 2007 (2007), Article ID 040469, 13 pages
doi:10.1155/2007/40469
Research Article
Contra-ω-Continuous and Almost Contra-ω-Continuous
School of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia
Received 29 May 2007; Accepted 31 July 2007
Academic Editor: Sehie Park
Copyright © 2007 Ahmad Al-Omari and Mohd Salmi Md Noorani. 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.
Abstract
The notion of contra continuous functions was introduced and
investigated by Dontchev. In this paper, we apply the notion of ω-open sets
in topological space to present and study a new class of called almost
contra ω-continuous functions as a new generalization of contra continuity.