2. ALGEBRAIC SEMIOTICS
Communication is mediated by signs, which occur in structured systems.
Context is important for meaning of signs:
For example, "Yes" can mean almost anything, given appropriate context.Signs usually come in systems, not as individuals.
Semiotic theories are axiomatic theories for sign systems, having:
First 2 use algebraic semantics; 3rd is partial orders on sorts & constructors.
Algebraic semiotics treats aspects of context with constructors that put signs in larger signs.
Formal, but interpretation is needed for human meaning;Algebraic semiotics should be used flexibly, and largely very informally.
this relies on values.