始域

日本語 · Thesaurus

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始域

noun

写像がある集合の要素に対して異なるまたは同じ集合の要素を対応させるときの、前者の集合。f: X → Y における X のこと。定義域。

Opposite: 終域, 終集合

Thesaurus

noun

Opposite: 終域, 終集合

In English

domain (mathematics) the set on which a function is defined

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MLA

"始域." Wiktionary, via Micwyn, micwyn.com/word/ja/%E5%A7%8B%E5%9F%9F. Accessed 6 Nov. 2026.

APA

始域. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/ja/%E5%A7%8B%E5%9F%9F

Chicago

"始域." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/ja/%E5%A7%8B%E5%9F%9F.

BibTeX

@misc{micwyn_2026,
  title = {始域},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/ja/%E5%A7%8B%E5%9F%9F},
  urldate = {2026-11-06}
}