Crash Course in the Theory of Logic
نویسنده
چکیده
is also a term. The usual versions of FOL do not provide for complex function expressions. Logicians usually count beginning with 0; 0-place function expressions are allowed, and in fact these are the same as individual constants. Predicate expressions combine with terms to make formulas. Like function expressions, predicate expressions are typed according to the number of arguments that they take. An
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