GlyphIndexModular congruence
17 ≡ 2 (mod 5)
Both integers have the same remainder after division by five.
Identical-to sign
The identical-to sign ≡ is used for identities and modular congruence. State the convention, and include the modulus for a congruence.
IDENTICAL TO
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Character details
♡→✦
3 code pointsMeaning and context
The identical-to sign ≡ is used for identities and modular congruence. State the convention, and include the modulus for a congruence.
How to use it
For modular arithmetic, include the modulus. For an identity, state the domain and make clear that the equation holds throughout that domain.
Examples
Algebraic identity
(x + 1)² ≡ x² + 2x + 1
The two expressions agree for every real x.
Similar shapes, different characters
Equals sign
U+003DAn ordinary equality may be enough when no identity or congruence convention is intended.
Approximately equal
U+2248Approximation expresses closeness instead of identity.
DetailsSources and method
- Unicode 18.0.0 character database — Pinned standard character identities and properties; the application computes UTF encodings from the original text.
- Unicode character code charts — Reference glyphs are not a guarantee of the appearance in a user’s font.