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Sentence #1399218

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Sentence #{{vm.sentence.id}} — belongs to {{vm.sentence.user.username}} Sentence #{{vm.sentence.id}}
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Comments

 GeeZ GeeZ January 28, 2012 January 28, 2012 at 11:58:07 AM UTC flag Report link Permalink

Warning to possible translators: "si et seulement si" has a different meaning in a mathematical context as in real life !

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License: CC BY 2.0 FR

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This sentence is original and was not derived from translation.

Une proposition est vraie si et seulement si sa contraposée est vraie.

added by GeeZ, January 28, 2012