IJPAM: Volume 91, No. 3 (2014)

NEW APPROACH TO COVERING ROUGH
SETS VIA RELATIONS

M.E. Abdel-Monsef$^1$, O.A. Embaby$^2$, M.K. El-Bably$^3$
$^{1,2,3}$Department of Mathematics
Faculty of Science
Tanta University, EGYPT
$^{2,3}$Deanery of Academic Services
Taibah University
Al-Madinah Al-Munawwarah, SAUDI ARABIA


Abstract. The present paper is devoted to discussion of extended covering rough sets from the relations point of view. In fact, we give new definitions to the lower and the upper approximations using a binary general relation. Moreover, our approach represent new generalizations of Pawlak approaches. New closure operators derived from relation are investigated too.

Received: November 8, 2013

AMS Subject Classification: 54A05, 54B05, 54C05

Key Words and Phrases: topology, closure operators, rough sets and covering rough sets by relations

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DOI: 10.12732/ijpam.v91i3.6 How to cite this paper?
Source: International Journal of Pure and Applied Mathematics
ISSN printed version: 1311-8080
ISSN on-line version: 1314-3395
Year: 2014
Volume: 91
Issue: 3