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γ and β Approximations via General Ordered Topological Spaces
Mathematics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
- 1 Mathematics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
Applied Mathematics·Volume 07 (2016)·Pages 1580–1588·Published 17 August 2016·DOI10.4236/am.2016.714136
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Abstract
In this paper, we introduce the concepts of g and b approximations via general ordered topological approximation spaces. Also, increasing (decreasing) g , b boundary, positive and negative regions are given in general ordered topological approximation spaces (GOTAS, for short). Some important properties of them were investigated. From this study, we can say that studying any properties of rough set concepts via GOTAS is a generalization of Pawlak approximation spaces and general approximation spaces.
KeywordsRough SetsApproximationsOrdered Topological Spaces
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