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An antisymmetric relation on a set is a binary relation ( R ) such that if ( aRb ) and ( bRa ) then ( a = b ). For a set with ( n ) elements, there are ( n(n-1)/2 ) pairs where ( a \neq b ), and each of these pairs can independently be included or excluded from the relation. Additionally, each element can relate to itself, contributing ( 2^n ) possibilities for self-relations. Therefore, the total number of antisymmetric relations is ( 2^{n(n-1)/2} ).

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4mo ago

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