Semantics

<theory> The meaning of a string in some language, as opposed to syntax which describes how symbols may be combined independent of their meaning.

The semantics of a programming language is a function from programs to answers.

A program is a closed term and, in practical languages, an answer is a member of the syntactic category of values.

The two main kinds are denotational semantics and operational semantics.

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self-reference selvage SEM semantic gap semantic network	abduction abstract interpretation ACT ONE ALEPH axiomatic semantics	semaphore semi Semi-Automatic Ground Environment semicolon semiconductor