Mathematical Bold Script Capital O 𝓞
Visual Description: The character is a bold script style O. It has looping, cursive lines with thick strokes. The shape feels handwritten, with gentle swashes that add flair. It stands out in math expressions and display formulas. It pairs well with other bold script symbols and uses clear contrast in text.
Meaning & Usage: The character often marks a variable, a special set, or a symbolic object in notation. It signals emphasis or a distinct class of items in equations. In editors and calculators, it can be chosen from a style menu to distinguish variables. It supports quick visual comparisons in formulas and notes.
Historical Background: This style grew from typographic traditions that blend bold weight with cursive forms. It evolved with math typesetting as fonts and Unicode allowed script variants. It is part of a larger family used to distinguish objects without changing meaning. It remains a decorative yet functional option.
Practical Use: In digital tools, toggle this style with a font switch. Use it for variables, constants, or special objects in formulas. It supports calculators, notebooks, and renderers that offer style presets and live previews. It helps readers scan equations faster.
See our category page for related symbols.
Look‑alikes: O (U+4F).
Need styled alternatives? Try the Fancy Text tool.
Confusables
Technical details
- Codepoint:
U+1D4DE - General Category:
Lu - Age:
3.1 - Bidi Class:
L - Decomposition:
<font> 004F - Block:
Mathematical Alphanumeric Symbols - Script:
Common - UTF-8:
F0 9D 93 9E - UTF-16:
D835 DCDE - UTF-32:
0001D4DE - HTML dec:
𝓞 - HTML hex:
𝓞 - JS escape:
\u{1D4DE} - Python \N{}:
\N{MATHEMATICAL BOLD SCRIPT CAPITAL O} - Python \U:
\U0001D4DE - URL-encoded:
%F0%9D%93%9E - CSS escape:
\1D4DE
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+1D4DE or a built‑in character picker.
HTML: use the numeric entity 퓞 (hex) or 퓞 (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.