Mathematical Script Capital U 𝒰
Visual Description: The MATHEMATICAL SCRIPT CAPITAL U has a flowing, calligraphic form with swelled upper and lower curves. It resembles a stylized U with extra loops that catch light in print. On screens, it reads as an elegant letter meant to stand out from plain capitals. It pairs well with formulas and symbols.
Meaning & Usage: In mathematics, the script capital U is often used to denote a special set, a space, or a function family. It signals a change from plain symbols to objects with structure. In formulas, one writes U as a container, then builds subsets or maps between spaces. In calculators, labels or fonts may adapt to show the object clearly.
Historical Background: Script letters like this one grew from handwritten calligraphy used in early mathematical notes. Scholars adopted them to distinguish special objects from ordinary symbols. Over time, typesetting and fonts carried the style into books and software. The shape remains a reminder of its handwritten origins, even in digital math tools.
Practical Use: In clear formulas and on calculators, the script U helps identify a space, a set, or a distinguished object. Users may switch to a script font in a quick UI control to emphasize such objects or to compare them side by side. It acts as a visual cue in problem solving.
See our category page for related symbols.
Look‑alikes: U (U+55).
Need styled alternatives? Try the Fancy Text tool.
Confusables
Technical details
- Codepoint:
U+1D4B0 - General Category:
Lu - Age:
3.1 - Bidi Class:
L - Decomposition:
<font> 0055 - Block:
Mathematical Alphanumeric Symbols - Script:
Common - UTF-8:
F0 9D 92 B0 - UTF-16:
D835 DCB0 - UTF-32:
0001D4B0 - HTML dec:
𝒰 - HTML hex:
𝒰 - JS escape:
\u{1D4B0} - Python \N{}:
\N{MATHEMATICAL SCRIPT CAPITAL U} - Python \U:
\U0001D4B0 - URL-encoded:
%F0%9D%92%B0 - CSS escape:
\1D4B0
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+1D4B0 or a built‑in character picker.
HTML: use the numeric entity 풰 (hex) or 풰 (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.