Lower and Upper Approximations in Hv- groups

Authors

  • B. Davvaz Department of Mathematics Yazd University Yazd, Iran

Keywords:

Hypergroup, Hy-group, Fundamental group, Interval set, Rough set, Lower and upper approximations, Conditional probability.

Abstract

The purpose of this paper is to introduce and discuss the concept of lower and upper approximations. A simple and straightforward way for interpreting rough sets is to use membership functions. We investi-gate the similarity between rough membership function and conditional probability. We also consider the fundamental relation kr defined on an Hy-group H and interprets the lower and upper approximations as sub-sets of the group Hi/` and give some properties of such subsets.

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Published

1999-02-18

Issue

Vol. 13 (1999)

Section

Volume 13-1999

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