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Math and science::Theory of Computation

# Alphabets and languages

An alphabet is defined to be any [...]. The members of an alphabet are [...] of the alphabet.

A [something over something] is a finite sequence of symbols from that alphabet.

A language is [...]. A language is [...] if no member is a proper prefix of another.

A string is a proper prefix of another if it is a prefix but not equal to the other.

We say that a finite machine $$M$$ [...] if $$A = \{w | M \text{ accepts } w \}$$. A language is called a [...] if some finite automaton recognizes it.