Mathematical Script Capital O Symbol
𝒪 is the Mathematical Script Capital O used as a styled capital O in technical and typographic contexts.
U+1D4AA
The symbol 𝒪 is a Unicode character with the name Mathematical Script Capital O (U+1D4AA). It’s commonly used to present math objects or variables in a script-style typographic form. You can copy it directly or insert it using Unicode escapes in code.
Mathematical Script Capital O Symbol Meaning
𝒪 (MATHEMATICAL SCRIPT CAPITAL O, U+1D4AA) is a stylized, script version of the capital letter “O”. In mathematical writing and typesetting, script capitals are often chosen to distinguish a specific set, operator, or named object from other symbols. Outside of heavy math notation, it’s also used by designers and writers who want a distinctive, elegant “O” for headings, logos, or visual emphasis. Because it’s a dedicated Unicode character (not a font-only effect), it’s typically safer for cross-platform copying than relying on a particular font that may not exist on all devices.
Common uses
- •Using a script-style capital O as a variable or label in mathematical notes
- •Designing distinctive typographic marks in posters, covers, or branding layouts
- •Creating math/tech documentation where script capitals improve symbol clarity
- •Embedding 𝒪 in web content for consistent Unicode-based rendering
- •Formatting presentations or diagrams that reference a specific “O” symbol
Examples
𝒪 — Mathematical Script Capital O
- 𝒪Let 𝒪 be the set of allowed outcomes.
- 𝒪Define 𝒪 as a script-style operator in this notation.
- 𝒪The boundary of 𝒪 is shown in blue.
- 𝒪We label the object 𝒪 in the diagram for clarity.
- 𝒪Choose 𝒪 to represent the primary output.
Variations
Ready to copy
Technical codes
| Unicode | U+1D4AA | |
| HTML Entity | 𝒪 | |
| HTML Code | 𝒪 | |
| CSS | \1D4AA |
FAQ
What does the Mathematical Script Capital O symbol mean?
𝒪 (MATHEMATICAL SCRIPT CAPITAL O, U+1D4AA) is a stylized, script version of the capital letter “O”. In mathematical writing and typesetting, script capitals are often chosen to distinguish a specific set, operator, or named object from other symbols. Outside of heavy math notation, it’s also used by designers and writers who want a distinctive, elegant “O” for headings, logos, or visual emphasis. Because it’s a dedicated Unicode character (not a font-only effect), it’s typically safer for cross-platform copying than relying on a particular font that may not exist on all devices.
How do I copy the symbol 𝒪?
Copy it directly from this page. The character is 𝒪, Unicode U+1D4AA (HTML entity: 𝒪).
What is the Unicode code point for 𝒪?
The Unicode code point is U+1D4AA. Its HTML entity is 𝒪.
Can I insert 𝒪 using code?
Yes. CSS escape: \\1D4AA and JavaScript escape: \\u{1D4AA} (as provided).
Is 𝒪 just a different font style of the letter O?
It’s a dedicated Unicode character (MATHEMATICAL SCRIPT CAPITAL O). It’s designed to be consistently rendered when the font supports it, rather than relying on a particular font effect.