関数

Japanese
Kanji in this term
関 数
かん
Grade: 4		 すう
Grade: 2
on’yomi

Etymology

From Mandarin 函數 (hánshù, “mathematical function”),[1] itself first used in print in 1859 in Li Shanlan's Chinese translation of Elias Loomis's Elements of Analytical Geometry and of the Differential and Integral Calculus.

The Japanese reading of kansū is based on the expected Japanese on'yomi of the constituent characters.

The 関数 spelling is a replacement for the older 函数 spelling, which was rendered obsolete when the 函 character was excluded during formulation of the Tōyō kanji list.

Pronunciation

Alternative forms
  • 函数 (historical, now uncommon)

Noun

関数 (shinjitai kanji, kyūjitai kanji 函數, hiragana かんすう, rōmaji kansū, historical hiragana くわんすう)

  1. (mathematics, computing) function

Compounds
Derived terms
  • 不連続関数 (ふれんぞくかんすう) (furenzokukansū): discontinuous function
  • 離散関数 (りさんかんすう) (risankansū): discrete function
  • 連続関数 (れんぞくかんすう) (renzokukansū): continuous function

Synonyms

(computing):

See also

References
  1. 1997, 新明解国語辞典 (Shin Meikai Kokugo Jiten), Fifth Edition (in Japanese), Tōkyō: Sanseidō, ISBN 4-385-13143-0
  2. 1998, NHK日本語発音アクセント辞典 (NHK Japanese Pronunciation Accent Dictionary) (in Japanese), Tōkyō: NHK, ISBN 978-4-14-011112-3
  3. 2006, 大辞林 (Daijirin), Third Edition (in Japanese), Tōkyō: Sanseidō, ISBN 4-385-13905-9
  • 2002, Ineko Kondō; Fumi Takano; Mary E Althaus; et. al., Shogakukan Progressive Japanese-English Dictionary, Third Edition, Tokyo: Shōgakukan, ISBN 4095102535.
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