Generalization of Pawlak’s rough approximation spaces by using δβ-open sets

Faculty	Science	Year:	2012
Type of Publication:	ZU Hosted	Pages:	1094–1105
Authors:	Hassan Mostafa Metwally Staff Zu Site Abstract In Staff Site
Journal:	International Journal of Approximate Reasoning ELSEVIER	Volume:

Keywords :	Generalization , Pawlak’s rough approximation spaces , using
Abstract:	The original rough setmodelwas developed by Pawlak, which is mainly concerned with the approximation of objects using an equivalence relation on the universe of his approximation space. This paper extends Pawlak’s rough set theory to a to

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