Mathematical Bold Capital S Symbol
𝐒 is the mathematical bold capital S character (U+1D412) used to represent styled S in formulas.
U+1D412
𝐒 is a Unicode character in the Mathematical Bold block. It’s commonly used when you want a bold, capital S in math text or styled typography. You can copy it directly or use the provided HTML, CSS, and JavaScript escapes.
Mathematical Bold Capital S Symbol Meaning
𝐒 (U+1D412) is the Unicode “MATHEMATICAL BOLD CAPITAL S”. It’s not the same as the plain ASCII letter “S”; it’s a specific styled glyph meant for mathematical/typographic contexts. Designers and developers use it to match “bold” math lettering in contexts where normal fonts don’t provide the exact weight or style. In practice, 𝐒 may appear as a variable, set name, or label in written math, as well as in documents and UIs that require consistent typographic styling. Its key value is visual consistency: it’s the correct Unicode character for that bold-capital S look.
Common uses
- •Using a bold-capital S to label sets, functions, or variables in math notes and documentation
- •Creating consistent typographic styling in design mockups that include mathematical text
- •Formatting headings or symbols in educational content where “S” must look bold and capitalized
- •Publishing math-related content for web and social platforms that require copyable Unicode characters
- •Building UI text, badges, or templates that use the exact Unicode glyph for bold S
Examples
𝐒 — Mathematical Bold Capital S
- 𝐒Let 𝐒 be a set of elements.
- 𝐒Define the operator 𝐒 on the space.
- 𝐒We compute 𝐒(x) for each value.
- 𝐒The matrix 𝐒 is invertible.
- 𝐒Choose 𝐒 to satisfy the condition.
Variations
Ready to copy
Technical codes
| Unicode | U+1D412 | |
| HTML Entity | 𝐒 | |
| HTML Code | 𝐒 | |
| CSS | \1D412 |
FAQ
What does the Mathematical Bold Capital S symbol mean?
𝐒 (U+1D412) is the Unicode “MATHEMATICAL BOLD CAPITAL S”. It’s not the same as the plain ASCII letter “S”; it’s a specific styled glyph meant for mathematical/typographic contexts. Designers and developers use it to match “bold” math lettering in contexts where normal fonts don’t provide the exact weight or style. In practice, 𝐒 may appear as a variable, set name, or label in written math, as well as in documents and UIs that require consistent typographic styling. Its key value is visual consistency: it’s the correct Unicode character for that bold-capital S look.
Is 𝐒 the same as a normal capital letter S?
No. 𝐒 is a specific Unicode character: “MATHEMATICAL BOLD CAPITAL S” (U+1D412). It may look different from the standard ASCII “S” depending on font support.
How can I copy 𝐒 into HTML?
You can paste the character directly, or use the HTML entity: 𝐒.
What’s the correct JavaScript escape for 𝐒?
Use \\u{1D412} to represent the character in JavaScript string literals that support Unicode escapes.
Can I use CSS to insert 𝐒?
Yes. With Unicode escapes, you can use the CSS escape form: \\1D412, provided your environment supports that syntax.