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sav07_homework_1 [2007/03/18 17:16] vkuncak |
sav07_homework_1 [2007/04/12 21:34] (current) vkuncak |
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See also [[Notes on Context-Free Grammars]]. | See also [[Notes on Context-Free Grammars]]. | ||
- | [[SAV07 Homework 1 Solution]] will be available only after the due date. | + | Here is [[SAV07 Homework 1 Solution]] for the theoretical part. |
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+ | NOTE: A formula of the form | ||
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+ | forall x < 0. F | ||
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+ | should always evaluate to true when x ranges over non-negative integers, regardless of F. Namely, there are no such non-negative x, so this is the case of a bounded quantifier over an empty set. This formula is trivially true because it is equivalent to | ||
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+ | forall x. false -> F | ||