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⟮

mathematical left flattened parenthesis

Mathematical Left Flattened Parenthesis

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⟮ is a specially shaped left delimiter for grouping parts of mathematical expressions. TeX had a command for this shape before Unicode encoded the character; its matching right delimiter is ⟯. In MathML, the fence can stretch to match a tall expression.

Text symbol

What ⟮ means

It opens a specially shaped group in mathematical notation.

TeX had the paired \lgroup and \rgroup commands before Unicode encoded matching characters. A 2007 Unicode proposal describes their occasional use around tall expressions; the Unicode characters let math systems represent these shapes directly.

What is \lgroup in TeX?

\lgroup is TeX's command for this left delimiter.

MathML treats it as an opening, stretchy, symmetric fence. It can grow to match a tall expression; symmetric means the glyph is centered around the formula's horizontal midline.

Technical and typesetting-specific; it signals deliberate mathematical notation.

Use it when the flattened shape is intended; it is not a drop-in substitute for every parenthesis.

Part of the collection

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
lgroup
Search it as
math delimiter · math fence · TeX lgroup · MathML fence · stretchy fence · flattened delimiter
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 27EE, 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 left flattened parenthesis”.
Linux
⎈Ctrl+⇧Shift+UType 27ee, then Enter or Space.
HTML
⟮
CSS
\27EE
TeX
How to type ⟮ in TeX: enter \lgroup; it produces the left member of the flattened delimiter pair.
Codes and encoding1 code points
HTML decimal
⟮
HTML hex
⟮
CSS content
content: "\27EE";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%9F%AE
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