<tool> A theorem proof system consisting of a table whose rows contain assertions or goals. Variables in assertions are implicitly universally quantified and variables in goals are implicitly existentially quantified. The declarative meaning of a tableau is that if every instance of every assertion is true then some instance of at least one of the goals is true.
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Nearby terms: DED « dedicated line « deductive database « deductive tableau » Deep Blue » deep hack mode » deep magic