Mathematical Italic Small O 𝑜
Visual Description: The Mathematical Italic Small O is a rounded letter with a gentle tilt to the right. It mirrors the look of other italic letters in math. The glyph is slim, has a smooth stroke, and a clear circular shape. It reads as a symbol, not a word.
Meaning & Usage: In equations, this italic o often marks a quantity to solve for or a parameter in a model. It helps distinguish variables from text in formulas. In functional notation, it signals a placeholder value that can change with input. Calculators and software treat it as a generic variable.
Historical Background: Historically, mathematicians used italic letters to separate symbols from ordinary words. The italic small o appeared as part of this tradition, aligning with other curved and rounded letters in the set. With modern fonts and digital typesetting, the symbol remains standard across textbooks, software, and online tools.
Practical Use: In user interfaces for calculators and apps, the italic small o can label a variable field or appear in a formula preview. Users can substitute values to see outcomes, or compare results against other symbols in a quick view. It supports quick operations and visual prompts in math workflows.
See our category page for related symbols.
Look‑alikes: o (U+6F).
Need styled alternatives? Try the Fancy Text tool.
Confusables
Technical details
- Codepoint:
U+1D45C - General Category:
Ll - Age:
3.1 - Bidi Class:
L - Decomposition:
<font> 006F - Block:
Mathematical Alphanumeric Symbols - Script:
Common - UTF-8:
F0 9D 91 9C - UTF-16:
D835 DC5C - UTF-32:
0001D45C - HTML dec:
𝑜 - HTML hex:
𝑜 - JS escape:
\u{1D45C} - Python \N{}:
\N{MATHEMATICAL ITALIC SMALL O} - Python \U:
\U0001D45C - URL-encoded:
%F0%9D%91%9C - CSS escape:
\1D45C
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+1D45C or a built‑in character picker.
HTML: use the numeric entity 표 (hex) or 표 (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.