Non-commutative hypergroup of order five
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We prove that all hypergroups of order four are commutative and that there exists a non-comutative hypergroup of order five. These facts imply that the minimum order of non-commutative hypergroups is five, even though the minimum order of non-commutative groups is six.
- Journal of Algebra and Its Applications
Journal of Algebra and Its Applications 16(7), 1750127, 2016-07-28
World Scientific Publishing