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In logic, WFF is an abbreviation for well-formed formula. Given a formal grammar, a WFF is any string that is generated by that grammar. Logic, from Classical Greek λόγος (logos), originally meaning the word, or what is spoken, (but coming to mean thought or reason) is most often said to be the study of arguments, although the exact definition of logic is a matter of controversy among philosophers. ... In computer science a formal grammar is an abstract structure that describes a formal language precisely, i. ...


For example, in propositional calculus the sequence of symbols ((alpharightarrowbeta)rightarrow(negbetarightarrownegalpha)) is a WFF because it is grammatically correct. The sequence of symbols ((alpharightarrowbeta)rightarrow(betabeta))alpha)) is not a WFF, because it does not conform to the grammar of propositional calculus. In mathematical logic the propositional calculus or sentential calculus is a formal deduction system whose atomic formulas are propositional variables. ...


In formal logic, proofs are sequences of WFFs with certain properties, and the final WFF in the sequence is what is proven. This is the basis for an esoteric pun used in the name of a product: "WFF 'n Proof: The Game of Modern Logic," by Layman Allen, a professor at the University of Michigan. The board game is designed to teach the principles of symbolic logic to children (in Polish notation), and its name is a pun on whiffenpoof, a nonsense word used as a cheer at Yale University made popular in The Whiffenpoof Song. Look up Proof on Wiktionary, the free dictionary The word proof can mean: Shit and wanker originally, a test assessing the validity or quality of something. ... University of Michigan, Ann Arbor The University of Michigan, Ann Arbor (UM or U of M) is a coeducational public research university in the U.S. state of Michigan. ... Polish notation, also known as prefix notation, is a method of mathematical expression. ... The Whiffenpoofs are an all-male vocal ensemble at Yale University . ... Yale University is a private university in New Haven, Connecticut. ...


External links

  • Well-Formed Formula for First Order Predicate Logic - includes a short Java quiz.

  Results from FactBites:
 
WFF - Wikipedia, the free encyclopedia (199 words)
Given a formal grammar, a WFF is any string that is generated by that grammar.
In formal logic, proofs are sequences of WFFs with certain properties, and the final WFF in the sequence is what is proven.
The board game is designed to teach the principles of symbolic logic to children (in Polish notation), and its name is a pun on whiffenpoof, a nonsense word used as a cheer at Yale University made popular in The Whiffenpoof Song.
World Forum of Fish Harvesters and Fishworkers (WFF) (1977 words)
WFF is providing a forum for improving fisheries, such as proposals for standards of professionalism for fishermen.
The meeting of the WFF Coordinating Committee could not be more timely; it comes not only on the heels of the killings in India and the beatings in Chile but with news of even more threats to global fisheries.
The WFF not only provides fishing organizations committed to sustainable fishing practices a support mechanism, it also provides them a means for spotlighting global attention on their local fishery problems.
  More results at FactBites »


 

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