Mathematical Double-struck Capital O Symbol
๐ is the Mathematical Double-Struck Capital O character (U+1D546).
U+1D546
๐ (U+1D546) is a double-struck, capital letter O used in specialized text. Itโs common in mathematical notation where a distinctive โOโ glyph is needed. Use it for copy/paste in documents, web pages, and design mockups.
Mathematical Double-struck Capital O Symbol Meaning
๐ is Unicodeโs โMATHEMATICAL DOUBLE-STRUCK CAPITAL Oโ (U+1D546). The double-stroke styling distinguishes it from the regular Latin capital O and from other mathematical O variants. In practice, itโs most often used in mathematical contexts where authors want a specific symbol appearanceโsuch as labeling sets or operators in notation conventions, or writing text that must match a particular font style. Because it belongs to the Mathematical alphanumeric symbols block, appearance depends on the font youโre using. If your font doesnโt support it, you may see a fallback or missing glyph.
Common uses
- โขTyping mathematical notation that requires the double-struck โOโ glyph
- โขLabeling variables or symbols in math-heavy documents and worksheets
- โขDesigning posters or slides that include specialized mathematical typography
- โขCreating consistent symbol styling in academic writing templates
- โขUsing the character in UI/mockups where a specific mathematical letterform is required
Examples
๐ Mathematical Double-Struck Capital O
- ๐Let ๐ be a set of outcomes.
- ๐Define ๐ as the set of integers with a chosen property.
- ๐We consider ๐ under the given operation.
- ๐The symbol ๐ appears in the second equation.
- ๐Font check: verify ๐ renders correctly in your document.
Variations
Ready to copy
Technical codes
| Unicode | U+1D546 | |
| HTML Entity | 𝕆 | |
| HTML Code | 𝕆 | |
| CSS | \1D546 |
FAQ
What does the Mathematical Double-struck Capital O symbol mean?
๐ is Unicodeโs โMATHEMATICAL DOUBLE-STRUCK CAPITAL Oโ (U+1D546). The double-stroke styling distinguishes it from the regular Latin capital O and from other mathematical O variants. In practice, itโs most often used in mathematical contexts where authors want a specific symbol appearanceโsuch as labeling sets or operators in notation conventions, or writing text that must match a particular font style. Because it belongs to the Mathematical alphanumeric symbols block, appearance depends on the font youโre using. If your font doesnโt support it, you may see a fallback or missing glyph.
How do I type or copy ๐?
Copy it directly from this page, or use its Unicode code point U+1D546 (HTML: 𝕆, CSS escape: \\1D546, JavaScript: \\u{1D546}).
Why does ๐ look different from a normal capital O?
๐ is a double-struck mathematical glyph. Its stylized stroke gives it a distinct appearance compared to the regular Latin capital O.
Will ๐ display correctly on all devices?
It depends on font support for the Mathematical alphanumeric symbols block. If a font lacks the glyph, you may see a fallback character.
Can I use ๐ in HTML or CSS?
Yes. For example, use HTML entity 𝕆 or CSS escape \\1D546 to include the character reliably when supported.