THE LEFT (RIGHT) ROUGH APPROXIMATIONS IN A GROUP
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Date
2019
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PUSHPA PUBLISHING HOUSE
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Abstract
Rough set theory proposes a new mathematical approach to model vagueness. In this paper, we introduce a new definition for rough approximations with respect to the subgroups of a group, which is called the left (right) lower and upper approximations. In fact, we prove that this definition is a generalization of definition in [5]. Then we give some properties of these rough approximations.
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rough sets, rough groups, left (right) lower approximation, left (right) upper approximation
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JP JOURNAL OF ALGEBRA NUMBER THEORY AND APPLICATIONS
Volume
42
Issue
1
Start Page
77
End Page
83