# Differences

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sav07_homework_1 [2007/03/23 06:10] vkuncak |
sav07_homework_1 [2007/04/12 21:34] (current) vkuncak |
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Here is [[SAV07 Homework 1 Solution]] for the theoretical part. | 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 | ||