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⟋

mathematical rising diagonal

Mathematical Rising Diagonal

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To enter ⟋, use LaTeX \diagup in a package that defines it; HTML, CSS, and JavaScript use format-specific escapes. In mathematical notation, it is a fixed 45 rising diagonal, including one side of double-coset expressions. Its angle and identity distinguish it from the ordinary slash /.

Text symbol

What ⟋ means

Use \diagup in a LaTeX package that defines it. HTML, CSS, and JavaScript each have exact escapes: ⟋, \27CB , and \u{27CB}, respectively. In plain text, enter ⟋ itself.

The angle is part of the character's form: ⟋ is expected at 45, while the ordinary solidus / often leans more steeply. If a font makes them look close, their roles still differ.

Where did ⟋ come from?

It was part of mathematical typesetting before Unicode encoded it. A 2009 Unicode proposal cites LaTeX symbol charts and an example from the mathematical journal Transactions of the American Mathematical Society. That record shows ⟋ in typesetting before it became a distinct plain-text character.

Its documented falling counterpart is . In H ⟍ G ⟋ B, the pair frames G in double-coset notation—a way to group elements of G by changes allowed from H on the left and B on the right.

It reads as specialist mathematical notation; the rising direction and fixed 45 angle are part of the form.

Do not substitute /: ⟋ is a fixed 45 mathematical diagonal; / is the general-purpose solidus.

Don't confuse it with

2

Combination ideas

1
Double-coset notation: the two diagonals frame G between left and right group actions.

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
diagup
Search it as
diagup latex · rising diagonal symbol · mathematical slash · diagonal slash · 45 degree slash
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 27CB, 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 “mathematical rising diagonal”.
Linux
⎈Ctrl+⇧Shift+UType 27cb, then Enter or Space.
HTML
⟋
CSS
\27CB
LaTeX
Use \diagup in a LaTeX package that defines the command.
HTML
Write ⟋ in HTML.
CSS
Use \27CB in a CSS escape; the space ends the escape.
JavaScript
Use \u{27CB} in a JavaScript string.
Codes and encoding1 code points
HTML decimal
⟋
HTML hex
⟋
CSS content
content: "\27CB";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%9F%8B
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