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≗

ring equal to

Ring Equal To

The circle-equals sign ≗ is a mathematical relation, but its meaning is not universal: each work defines what relation it marks. A 2016 math Q&A shows the LaTeX command <code>\circeq</code>.

Text symbol
Also called
circeq · circle-equals
Search it as
circle equals · circeq meaning
Shows up in
Anything that takes text · its shape is whatever your font draws

What ≗ means

It can mark any relation defined by that text. A 2016 math Q&A gives two uses: polynomials (expressions built from powers of a variable) sharing a root (a value that makes both zero), and theories with the same models (interpretations that make their statements true).

What older names are recorded?

The markup names are cire and circeq. A 2003 ISO 9573-13 draft lists both; a 2002 W3C MathML table also maps circeq to this character. A named entity is text a document uses for a special character. These tables name the character; each mathematical work defines its relation.

Don't confuse it with

1

Questions people ask

1

Why does ≗ show as a box on some devices?

Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.

How to type ≗

Windows (Word)
Alt+XType 2257, then Alt+X to get ≗.
Windows
Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win + .).
macOS
Control+Command+SpaceOpen the character viewer and search “ring equal to”.
Linux
Ctrl+Shift+UType 2257, then Enter or Space.
HTML
&#x2257;
CSS
\2257
Codes and encoding1 code points
HTML decimal
&#8791;
HTML hex
&#x2257;
CSS content
content: "\2257";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%89%97
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

1

Maths & numbers1,835 symbols