Mathematical logic | Formal languages | Metalogic | Logical expressions

Well-formed formula

In mathematical logic, propositional logic and predicate logic, a well-formed formula, abbreviated WFF or wff, often simply formula, is a finite sequence of symbols from a given alphabet that is part of a formal language. A formal language can be identified with the set of formulas in the language. A formula is a syntactic object that can be given a semantic meaning by means of an interpretation. Two key uses of formulas are in propositional logic and predicate logic. (Wikipedia).

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WFF 'N PROOF | Interpretation (logic) | Syntax (logic) | Alonzo Church | Polish notation | Ground expression | Propositional calculus | Order of operations | Mathematical proof | Propositional formula | Formal language | Sequence | List of model checking tools | Arity | Atomic formula | Well-formedness | Variable (mathematics) | Backus–Naur form | Term (logic) | Symbol (formal) | Infix notation | Well-defined expression | Propositional variable | Existential quantification | Effective method | Domain of discourse | Mathematical logic | Logical connective | First-order logic