What ⦋ means
It opens a bracketed expression; the notation gives it meaning.
The phrase “lbrke notation” comes from older math-markup catalogs. An ISO/IEC report in 1991 glossed lbrke as “left bracket, equal”; a W3C MathML dictionary listed it as a fence in 1998.
Math typesetting controls how this fence grows
MathML, a math-markup format, lists it as a prefix fence: an opening delimiter that can stretch evenly as the expression grows. Plain text will not enlarge it around tall expressions; the math renderer and font support control its display.
Technical and niche; found in mathematical typesetting, markup, and notation catalogs.
Its shape alone does not supply a universal operation.
Related characters
1
Questions people ask
1Why 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.
More like this
9
How to type or find ⦋
- Also called
- lbrke · lbrackubar
- Search it as
- bracket equal · math bracket · U+298B
- Shows up in
- Anything that takes text · its shape is whatever your font draws
⦋\298BCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.