proof by contradiction

listen to the pronunciation of proof by contradiction
الإنجليزية - الإنجليزية
A proof of the following sort (1): It is desired to prove A, so assume that A is not true, and derive a contradiction from this assumption. From this it follows that "not A" implies falsity, in other words "not not A" is true. From the law of double negation, it follows that A is true. Also, a proof of the following sort (2): It is desired to prove "not A", so assume that A is true, and derive a contradiction. From this it follows that A implies falsity, in other words "not A". Both sorts of proof are valid in classical logic but only the second sort is valid in intuitionistic logic.http: //plato.stanford.edu/entries/logic-intuitionistic/
proof by contradiction

    الواصلة

    proof by con·tra·dic·tion

    التركية النطق

    pruf bay käntrıdîkşın

    المترادفات

    reductio ad absurdum

    النطق

    /ˈpro͞of ˈbī ˌkäntrəˈdəksʜən/ /ˈpruːf ˈbaɪ ˌkɑːntrəˈdɪkʃən/

    علم أصول الكلمات

    [ 'prüf ] (noun.) 13th century. Middle English, alteration of preove, from Old French preuve, from Late Latin proba, from Latin probare to prove; more at PROVE.

    كلمة اليوم

    running dog
المفضلات