It helps me to compare sign relations with my other favorite class of triadic relations, namely, groups. Applications of mathematical groups came up just recently in the Laws of Form discussion group, so it will save a little formatting time to adapt the definition used there.
Cf: Animated Logical Graphs • 60
Definition 1. A group is a set together with a binary operation satisfying the following three conditions.
- Associativity. For any
we have - Identity. There is an identity element such that
we have - Inverses. Each element has an inverse, that is, for each
there is some such that
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cc: Ontolog Forum • Structural Modeling • Systems Science
cc: FB | Semeiotics • Laws of Form • Peirce List (1) (2) (3) (4) (5) (6)
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