Basic Notions and Properties of Orthoposets1
نویسنده
چکیده
In this paper S, X denote non empty sets and R denotes a binary relation on X . We introduce orthorelational structures which are extensions of relational structure and ComplStr and are systems 〈 a carrier, an internal relation, a complement operation 〉, where the carrier is a set, the internal relation is a binary relation on the carrier, and the complement operation is a unary operation on the carrier. Let A, B be sets. The functor / 0A,B yielding a relation between A and B is defined by: (Def. 1) / 0A,B = / 0.
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