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⧝

tie over infinity

Tie Over Infinity

⧝ has a rare reported use for uncountable infinity, and its exact reading depends on a text’s notation. A 2014 W3C Math discussion recalls related notation in mid-1800s treatises and early-1900s writing; its contributor remembered no examples in mathematical texts after the 1950s.

Text symbol

What ⧝ means

No; one historical report does not establish a universal rule. In a 2014 W3C Math mailing-list reply, a contributor calls ⧝ a rare variant and connects it with “big” infinity. Read a particular formula through the definitions its author gives.

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 ⧝

Search it as: ⧝ · uncountable infinity · big infinity · infintie
Shows up in: Anything that takes text · its shape is whatever your font draws

Windows (Word)

⎇Alt+XType 29DD, 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 “tie over infinity”.

Linux

⎈Ctrl+⇧Shift+UType 29dd, then Enter or Space.

HTML

⧝

CSS

\29DD

MathML 2 entity

MathML 2 uses the named entity ⧝ for ⧝; this is markup syntax, not a keyboard shortcut.

Codes and encoding1 code points

HTML decimal

⧝

HTML hex

⧝

CSS content

content: "\29DD";

Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.

URL encoded

%E2%A7%9D

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

1️⃣📏📐✖️➕➖➗🟰♾️#️⃣*️⃣0️⃣