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reductio ad absurdum
(redirected from Reductio ad absurdium)

   Also found in: Legal, Wikipedia, Hutchinson 0.02 sec.
reductio ad absurdum [ri¦dək·tē·ō äd ab′sərd·əm]
(mathematics)
A method of proof in which it is first supposed that the fact to be proved is false, and then it is shown that this supposition leads to the contradiction of accepted facts. Also known as indirect proof; proof by contradiction.


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