Single identities for varieties equivalent to quadruple systems
نویسندگان
چکیده
منابع مشابه
Single identities for varieties equivalent to quadruple systems
If H is a subgroup of the symmetric group $4, then a 3-groupoid (S, f ) is called H-permutable if f ( x ~ ( 1 ) , X a ( 2 ) , X ~ r ( 3 ) ) = X~(4) ~ f ( x l , x2 ,x3 ) = x4 for every cr C H. Some classes of generalized idempotent H-permutable 3-groupoids are equivalent to Steiner, Mendelsohn and other quadruple systems. We prove that the variety of generalized idempotent H-permutable 3-groupoi...
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ژورنال
عنوان ژورنال: Discrete Mathematics
سال: 1998
ISSN: 0012-365X
DOI: 10.1016/s0012-365x(97)00060-5