• Journal of applied mathematics & informatics
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• v.6 no.1
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• pp.167-202
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• 1999

In this paper we introduce the concept of an interval-valued fuzzy subhypergroup of a hypergroup which is an extended notion of a fuzzy subhypergroup of a hypergroup and give some properties of such subhypergroups.

• Journal of applied mathematics & informatics
• /
• v.6 no.1
• /
• pp.197-197
• /
• 1999