対偶

日本語 · 한국어

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対偶

noun たいぐう

命題「pならばqである」に対して、前件と後件をそれぞれ否定して入れ替えた命題のこと。先の命題の対偶は「qでないならばpでない」となる。対偶の真偽は元の命題の真偽と一致する。
rhetoric 中国語における修辞法の一つ。対句。

In English

pair kinematics: two elements, which permit only certain kind of relative motion
contrapositive the inverse of the converse of a given proposition
contraposition logical statement

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MLA

"対偶." Wiktionary, via Micwyn, micwyn.com/word/ja/%E5%AF%BE%E5%81%B6. Accessed 6 Nov. 2026.

APA

対偶. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/ja/%E5%AF%BE%E5%81%B6

Chicago

"対偶." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/ja/%E5%AF%BE%E5%81%B6.

BibTeX

@misc{micwyn_2026,
  title = {対偶},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/ja/%E5%AF%BE%E5%81%B6},
  urldate = {2026-11-06}
}