當且僅當

Chinese

		to act as; represent; equal to act as; represent; equal; should; fitting; suitable; adequate; proper; replace; to be; to hold a position; manage; withstand; when; during; ought; match equally; same; obstruct; just at (a time or place); on the spot; right; just at	further; moreover	barely; only; merely	to act as; represent; equal to act as; represent; equal; should; fitting; suitable; adequate; proper; replace; to be; to hold a position; manage; withstand; when; during; ought; match equally; same; obstruct; just at (a time or place); on the spot; right; just at
trad. (當且僅當)		當	且	僅	當
simp. (当且仅当)		当	且	仅	当
Literally: “when and only when”.

Pronunciation

Mandarin
(Pinyin): dāngqiějǐndāng

(Zhuyin): ㄉㄤㄑㄧㄝˇ ㄐㄧㄣˇ ㄉㄤ
Cantonese (Jyutping): dong¹ ce² gan² dong¹

Mandarin
- (Standard Chinese)⁺
  - Hanyu Pinyin: dāngqiějǐndāng [Phonetic: dāngqiéjǐndāng]
  - Zhuyin: ㄉㄤㄑㄧㄝˇ ㄐㄧㄣˇ ㄉㄤ
  - Tongyong Pinyin: dangciějǐndang
  - Wade–Giles: tang¹-chʻieh³-chin³-tang¹
  - Yale: dāng-chyě-jǐn-dāng
  - Gwoyeu Romatzyh: dangchieejiindang
  - Palladius: данцецзиньдан (danceczinʹdan)
  - Sinological IPA ^(key): /tɑŋ⁵⁵ t͡ɕʰi̯ɛ²¹⁴⁻³⁵ t͡ɕin²¹⁴⁻²¹ tɑŋ⁵⁵/
Cantonese
- (Standard Cantonese, Guangzhou–Hong Kong)⁺
  - Jyutping: dong¹ ce² gan² dong¹
  - Yale: dōng ché gán dōng
  - Cantonese Pinyin: dong¹ tse² gan² dong¹
  - Guangdong Romanization: dong¹ cé² gen² dong¹
  - Sinological IPA ^(key): /tɔːŋ⁵⁵ t͡sʰɛː³⁵ kɐn³⁵ tɔːŋ⁵⁵/

Conjunction

當且僅當

(Mainland China, mathematics, logic) if and only if

Synonyms

若且唯若 (ruòqiěwéiruò)

This article is issued from Wiktionary. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.