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⧜

incomplete infinity

Incomplete Infinity

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⧜ denotes incomplete infinity in specialist formulas. It is linked to , but MathML’s infix label only says where it sits; use it only when the notation defines its role.

Text symbol

What ⧜ means

It is a specialist sign for incomplete infinity. Unicode cross-references it to ; MathML 3 marks it as infix, meaning it sits between expressions.

“Broken infinity” is an informal name for this math symbol, not a rendering fault. In a 2014 MathML discussion, one contributor recalled seeing it in 19th-century treatises and early-20th-century texts on uncountable infinity, with use fading after the 1950s.

A blank or box means the font or app cannot display the glyph.

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 or find ⧜

Also called
broken infinity
Search it as
iinfin · incomplete infinity LaTeX
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 29DC, then AltX 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 “incomplete infinity”.
Linux
⎈Ctrl+⇧Shift+UType 29dc, then Enter or Space.
HTML
⧜
CSS
\29DC
LaTeX with STIX
Load STIX and use \iinfin in math mode.
HTML
Use ⧜ or ⧜ with ISOtech-derived entity sets.
Codes and encoding1 code points
HTML decimal
⧜
HTML hex
⧜
CSS content
content: "\29DC";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%A7%9C
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