identity function

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identity function

noun identity functions

A function whose value is always the same as its independent variable, and for which the codomain equals the domain.

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noun a function whose value is always the same as its independent variable

Español	función identidad
中文	恆等式 /恒等式 héngděngshì
Français	application identité, fonction identité
Русский	тожде́ственное отображе́ние toždéstvennoje otobražénije
Tiếng Việt	đồng nhất thức
עברית	פונקצית זהות

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MLA

"identity function." Wiktionary, via Micwyn, micwyn.com/word/identity%20function. Accessed 6 Nov. 2026.

APA

identity function. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/identity%20function

Chicago

"identity function." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/identity%20function.

BibTeX

@misc{identity_function_2026,
  title = {identity function},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/identity%20function},
  urldate = {2026-11-06}
}