Mathematical Bold Italic Capital X Symbol
𝑿 is the Mathematical Bold Italic Capital X symbol (U+1D47F), used to represent styled X in math and typography.
U+1D47F
The symbol 𝑿 is a Unicode mathematical character: Mathematical Bold Italic Capital X (U+1D47F). You can copy it directly or use its HTML, CSS, or JavaScript escapes when styling text in code.
Mathematical Bold Italic Capital X Symbol Meaning
𝑿 is a styled form of the capital letter X used in mathematical and technical typography. Because it is “mathematical bold italic,” it’s typically chosen to distinguish one variable, set name, vector/matrix symbol, or labeled quantity from other X characters that use normal, bold, italic, or different weights. In practice, the exact meaning depends on the context of your document or design (for example, a specific variable in an equation or a labeled element in an infographic). When copying, ensure the font and rendering support the Unicode character so it displays as intended.
Common uses
- •Representing a specific variable or parameter named X with bold italic styling in math text
- •Creating consistent notation in equations or problem statements where X must be visually distinct
- •Designing posters, slides, or infographics that use typographic math-like styling
- •Labeling variables in technical diagrams (e.g., axes, data series, or highlighted symbols)
- •Using Unicode symbol variants in documentation and UI text for math-heavy interfaces
Examples
𝑿 — Mathematical Bold Italic Capital X
- 𝑿Let 𝑿 be the unknown vector.
- 𝑿The matrix 𝑿 satisfies the constraint.
- 𝑿We define 𝑿 = (x₁, x₂, …).
- 𝑿Choose a value for 𝑿 to compute the result.
- 𝑿Consider the transformation applied to 𝑿.
Variations
Ready to copy
Technical codes
| Unicode | U+1D47F | |
| HTML Entity | 𝑿 | |
| HTML Code | 𝑿 | |
| CSS | \1D47F |
FAQ
What does the Mathematical Bold Italic Capital X symbol mean?
𝑿 is a styled form of the capital letter X used in mathematical and technical typography. Because it is “mathematical bold italic,” it’s typically chosen to distinguish one variable, set name, vector/matrix symbol, or labeled quantity from other X characters that use normal, bold, italic, or different weights. In practice, the exact meaning depends on the context of your document or design (for example, a specific variable in an equation or a labeled element in an infographic). When copying, ensure the font and rendering support the Unicode character so it displays as intended.
What Unicode character is 𝑿?
𝑿 is the Unicode character “MATHEMATICAL BOLD ITALIC CAPITAL X” with code point U+1D47F.
How can I copy 𝑿 into HTML?
You can use the HTML entity: 𝑿.
What CSS or JavaScript escapes can I use for 𝑿?
CSS escape: \\1D47F. JavaScript escape: \\u{1D47F}.
Will 𝑿 always look the same on every device?
Not necessarily—rendering depends on the font and Unicode support. If the font lacks the glyph, the character may display differently or fall back to another style.