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reductio ad absurdum proof

См. также в других словарях:

  • Reductio ad absurdum — (Latin for reduction to the absurd ), also known as an apagogical argument, reductio ad impossibile, or proof by contradiction, is a type of logical argument where one assumes a claim for the sake of argument and derives an absurd or ridiculous… …   Wikipedia

  • reductio ad absurdum — [ri duk′tē ō΄ ad ab sʉr′dəm, ri duk′shē ō΄] n. [L, reduction to absurdity] Logic the proof of a proposition by showing its opposite to be an obvious falsity or self contradiction, or the disproof of a proposition by showing its consequences to be …   English World dictionary

  • reductio ad absurdum — /ri duk tee oh ad ab serr deuhm, zerr , shee oh /, Logic. a reduction to an absurdity; the refutation of a proposition by demonstrating the inevitably absurd conclusion to which it would logically lead. [1735 45; < L reductio ad absurdum] * * * ▪ …   Universalium

  • reductio ad absurdum — Demonstration Dem on*stra tion, n. [L. demonstratio: cf. F. d[ e]monstration.] 1. The act of demonstrating; an exhibition; proof; especially, proof beyond the possibility of doubt; indubitable evidence, to the senses or reason. [1913 Webster]… …   The Collaborative International Dictionary of English

  • reductio ad absurdum —    (reh DUK tee oh ahd ahb SOOR dum) [Latin] Reduction to the absurd: proof of the falsity of a statement by showing its logical consequence to be absurd; carrying a principle to unreasonable lengths.    The weepy, shrieking girls who surround… …   Dictionary of foreign words and phrases

  • reductio ad absurdum — noun The method of proving a statement by assuming the statement is false and, with that assumption, arriving at a blatant contradiction. Syn: proof by contradiction …   Wiktionary

  • Reductio ad Hitlerum — Reductio ad Hitlerum, also argumentum ad Hitlerum, (Latin for reduction to and argument to and dog Latin for Hitler respectively) is an ad hominem or ad misericordiam argument whereby an opponent s view is compared to a view that would be held by …   Wikipedia

  • Proof that π is irrational — Although the mathematical constant known as pi; (pi) has been studied since ancient times, and so has the concept of irrational number, it was not until the 18th century that π was proved to be irrational.In the 20th century, proofs were found… …   Wikipedia

  • reductio — noun (reduction to the absurd) a disproof by showing that the consequences of the proposition are absurd; or a proof of a proposition by showing that its negation leads to a contradiction • Syn: ↑reductio ad absurdum • Hypernyms: ↑disproof,… …   Useful english dictionary

  • proof by contradiction — noun Proof of a statement adduced by deriving a contradiction from the statements negation. Syn: reductio ad absurdum …   Wiktionary

  • Turing's proof — First published in January 1937 with the title On Computable Numbers, With an Application to the Entscheidungsproblem , Turing s proof was the second proof of the assertion (Alonzo Church proof was first) that some questions are undecidable :… …   Wikipedia

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