Mathematical Fraktur Small B 𝔟
Visual Description: The character is a small letter b rendered in a bold Fraktur style, with thick vertical strokes and decorative curves. It has a compact, ornate silhouette that stands out in mathematical text. In formulas, it marks a specific type of variable and can appear next to calculators or UI controls for emphasis.
Meaning & Usage: This Fraktur b typically signals a variable belonging to a particular style or class. It is used to differentiate constants, sets, or distinguished functions in equations. In quick UI, it can be selected to apply a style change, or to compare values with other letters.
Historical Background: The Fraktur style originated in early typography as a way to distinguish certain letters in printed text. In mathematics, designers and font developers adopted it to give variables a scholarly appearance. Its use grew with typesetting and digital fonts, offering a visual cue without changing the symbol's meaning.
Practical Use: In teaching and software, Fraktur b helps distinguish a variable class or denote a special constant. It pairs with formulas and calculators, and UI designers provide quick controls to switch between font styles or compare values. Use it sparingly to avoid clutter and keep equations readable.
See our category page for related symbols.
Look‑alikes: b (U+62).
Need styled alternatives? Try the Fancy Text tool.
Confusables
Technical details
- Codepoint:
U+1D51F - General Category:
Ll - Age:
3.1 - Bidi Class:
L - Decomposition:
<font> 0062 - Block:
Mathematical Alphanumeric Symbols - Script:
Common - UTF-8:
F0 9D 94 9F - UTF-16:
D835 DD1F - UTF-32:
0001D51F - HTML dec:
𝔟 - HTML hex:
𝔟 - JS escape:
\u{1D51F} - Python \N{}:
\N{MATHEMATICAL FRAKTUR SMALL B} - Python \U:
\U0001D51F - URL-encoded:
%F0%9D%94%9F - CSS escape:
\1D51F
How to type / insert
Fast copy: click the Copy button near the top of this page.
By codepoint: in many editors and IDEs, you can insert via the Unicode code U+1D51F or a built‑in character picker.
HTML: use the numeric entity 픟 (hex) or 픟 (decimal) when an HTML entity is needed.
Compatibility & troubleshooting
Font support: if the symbol does not render, the current font likely lacks this codepoint. Choose a font with broad Unicode coverage or allow a fallback font.
Web pages: ensure your CSS font stack includes a general fallback; avoid relying on images for common symbols to preserve accessibility and copyability.