≡

See also: ≢ [U+2262 NOT IDENTICAL TO], ☰ [U+2630 TRIGRAM FOR HEAVEN], 三 [U+4E09 CJK UNIFIED IDEOGRAPH-4E09], and Ξ [U+039E GREEK CAPITAL LETTER XI]

≡ U+2261, ≡ IDENTICAL TO ← ≠ [U+2260] Mathematical Operators ≢ → [U+2262]

Translingual

Symbol

≡

1. (mathematics) "Is equivalent to".
2. (mathematics) "Is identically equal to".

   The functions f and g satisfy f≡g if and only if their respective domain of definition coincide, and if f(x)=g(x) for all x in this domain.

3. (mathematics) "Is defined as, is set to".
4. (number theory) "Is congruent to"; used in calculations of modulo.

   15≡3 mod 4, since both 15 and 3 gives a remainder of 3 when divided by 4.

5. (chemistry) A triple bond.
6. (logic, dated) If and only if.
7. (logic) An elementary equivalence.
8. (meteorology) Fog.
9. (computing, dated) ISO 2047 symbol for Line Feed.
10. (botany) A homotypic synonym.

Antonyms

• ≢

Derived terms

• ⩨
• ⧥

See also

• =
• hamburger icon
• triple bar
• Appendix:Variations of "≡"
• Appendix:Variations of horizontal lines

Further reading

• Triple bar on Wikipedia.Wikipedia