The semantics of a logic associate each formula with a meaning. Two key uses of formulas are in propositional logic and predicate logic. A grammatical expression is called a wellformed formula wff. Give a related but different kind of reasoning with a different outcome.
The following is a list of characters that can be used. The zfc axiom of extension conveys the idea that, as in naive set theory, a set is determined solely by its members. Formulate the advertising reasoning as a wff and use the form to see the true situation. A wellformed formula wff is a string of symbols that is grammatically syntactically correct by virtue of belonging to some language of interest. Wellformed formula wff encyclopedia of computer science. The w s consist of the least set of strings such that. Well formed formulae wff pdf download well formed formulae wff pdf read online other articles where wellformed formula is discussed. Fortunately, the syntax of propositional logic is easy to learn. Read the propositional logic page to learn more about the algorithm used on the html form above.
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