Phrase guide

identity function

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Across languages

Translations

10 source translations are retained for this English entry.

  • Catalan: funció identitat — a function whose value is always the same as its independent variable
  • Chinese Mandarin: 恆等式 /恒等式 (héngděngshì) — a function whose value is always the same as its independent variable
  • Finnish: identiteettifunktio — a function whose value is always the same as its independent variable
  • French: application identité — a function whose value is always the same as its independent variable
  • French: fonction identité — a function whose value is always the same as its independent variable
  • Hebrew: פונקצית זהות — a function whose value is always the same as its independent variable
  • Hungarian: identitásfüggvény — a function whose value is always the same as its independent variable
  • Russian: тожде́ственное отображе́ние (toždéstvennoje otobražénije) — a function whose value is always the same as its independent variable
  • Spanish: función identidad — a function whose value is always the same as its independent variable
  • Vietnamese: đồng nhất thức — a function whose value is always the same as its independent variable