U+27C1 · Math symbol
LaTeX
\whiteinwhitetriangle
White Triangle Containing Small White Triangle Symbol ⟁
⟁ is white triangle containing small white triangle, U+27C1 — \whiteinwhitetriangle in LaTeX. It was added in Unicode 4.1, and Unicode files it under Math symbol.
What Unicode says about ⟁
used by Euclid
— annotation from the Unicode Standard, NamesList.txt
Codes & technical data
| Unicode | U+27C1 | |
|---|---|---|
| HTML hex | ⟁ | |
| HTML decimal | ⟁ | |
| CSS | \27C1 | |
| JavaScript | \u{27C1} | |
| Python | \U000027C1 | |
| Java / C# | \u27C1 | |
| Rust | \u{27c1} | |
| Swift | \u{27C1} | |
| PHP | \u{27C1} | |
| URL encoded | %E2%9F%81 | |
| UTF-8 bytes | E2 9F 81 | |
| UTF-16 bytes | 27C1 | |
| Base64 | 4p+B | |
| Decimal | 10177 | |
| LaTeX | \whiteinwhitetriangle | |
| Category | Math symbol (Sm) | |
| Introduced | Unicode 4.1 | |
Will ⟁ survive being pasted?
- Normalisation. Yes. ⟁ is unchanged by NFKC, so it survives normalising systems intact.
- Legacy encodings. ⟁ is Unicode-only — it has no Latin-1 equivalent, so a system stuck on an 8-bit encoding cannot represent it.
- Size. 3 bytes in UTF-8. Character-limited fields — SMS, bios, some form validators — usually count bytes, not characters.
Other triangle characters
Unicode names 24 characters ending in “triangle”. They differ by direction, weight or decoration rather than by meaning.
Nearby in Miscellaneous Mathematical Symbols-A
Overflow from the main operator block — extra brackets, angle marks and logic symbols that arrived after Mathematical Operators was closed.
How to type ⟁
| Windows | Type 27C1 then press Alt+X |
|---|---|
| macOS | Press Ctrl+Cmd+Space, then search for “white triangle containing small white triangle” |
| Linux | Press Ctrl+Shift+U, type 27c1, press Enter |
| HTML | ⟁ |
About Unicode’s Math symbol category
Unicode classifies this as a mathematical symbol, which means software that lays out formulas treats it as an operator or relation and gives it spacing accordingly, rather than setting it tight against its neighbours like a letter.
Frequently asked questions
- How do I type the ⟁ white triangle containing small white triangle symbol?
- On Windows, type 27C1 and press Alt+X. On Linux press Ctrl+Shift+U then 27c1. On any system the quickest route is the copy button on this page.
- What is the code for ⟁?
- White Triangle Containing Small White Triangle is U+27C1 and in LaTeX as \whiteinwhitetriangle. In UTF-8 it takes 3 bytes. The table above lists every escape format.
- What kind of character is ⟁?
- White Triangle Containing Small White Triangle is filed under Math symbol in the Miscellaneous Mathematical Symbols-A block, and was introduced in Unicode 4.1. Unicode classifies this as a mathematical symbol, which means software that lays out formulas treats it as an operator or relation and gives it spacing accordingly, rather than setting it tight against its neighbours like a letter.