Free Function (c )
Free function may refer to * an uninterpreted function In mathematical logic, an uninterpreted function or function symbol is one that has no other property than its name and ''n-ary'' form. Function symbols are used, together with constants and variables, to form terms. The theory of uninterpreted f ... in mathematics * a non-member function in the C++ programming language {{disambiguation ...
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Uninterpreted Function
In mathematical logic, an uninterpreted function or function symbol is one that has no other property than its name and ''n-ary'' form. Function symbols are used, together with constants and variables, to form terms. The theory of uninterpreted functions is also sometimes called the free theory, because it is freely generated, and thus a free object, or the empty theory, being the theory having an empty set of sentences (in analogy to an initial algebra). Theories with a non-empty set of equations are known as equational theories. The satisfiability problem for free theories is solved by syntactic unification; algorithms for the latter are used by interpreters for various computer languages, such as Prolog. Syntactic unification is also used in algorithms for the satisfiability problem for certain other equational theories, see Unification (computer science). Example As an example of uninterpreted functions for SMT-LIB, if this input is given to an SMT solver: (declare-fun f (I ...
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