What 𝟬 means
No; this style alone has no fixed meaning. Its value is zero; a formula may use its style to distinguish it.
In 1999, a Unicode proposal noted sans-serif bold digits—bold type without small finishing strokes—as already used in scientific publishing. Separate characters preserve mathematical distinctions in plain text.
Math notation; the formula sets its role.
Bold alone doesn't mean “zero vector.”
Don't confuse it with
3Combination ideas
1A zero-to-nine range for checking math-font coverage.
Questions people ask
2Why did 𝟬 turn into plain 0?
Unicode compatibility cleanup called NFKC or NFKD maps 𝟬 to plain 0; NFC or NFD preserve it.
Why might 𝟬 show as a box?
The font may lack this glyph. MathML 3.0, a web math format, ties display to available glyph support.
How to type 𝟬
Windows (Word)
Alt+XType 1D7EC, then Alt+X to get 𝟬.
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 sans-serif bold digit zero”.
Linux
Ctrl+Shift+UType 1d7ec, then Enter or Space.
HTML
𝟬CSS
\1D7ECCodes and encoding1 code points
HTML decimal
𝟬
HTML hex
𝟬
CSS content
content: "\1D7EC";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%F0%9D%9F%AC
1
On screen
1
Code points
2
JS .length
4
UTF-8 bytes
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.