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Abstract and Applied Analysis
Volume 2013 (2013), Article ID 189208, 7 pages
http://dx.doi.org/10.1155/2013/189208
Research Article

New Rough Set Approximation Spaces

Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, Egypt

Received 1 September 2012; Revised 22 November 2012; Accepted 28 November 2012

Academic Editor: Ziemowit Popowicz

Copyright © 2013 H. M. Abu-Donia. 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.

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