Mathematical Double-struck Capital K Symbol
π (U+1D542) is the mathematical double-struck capital K used in technical and typographic contexts.
U+1D542
π is a Unicode math symbol: MATHEMATICAL DOUBLE-STRUCK CAPITAL K (U+1D542). Itβs commonly used where double-struck letters help distinguish mathematical sets or number systems. You can copy it directly or use its Unicode/HTML escapes in code.
Mathematical Double-struck Capital K Symbol Meaning
The character π (MATHEMATICAL DOUBLE-STRUCK CAPITAL K, U+1D542) is part of the βdouble-struckβ style used in mathematics. In many texts and typesetting conventions, double-struck capitals are used to represent specific sets or structured objects (for example, common number systems or named mathematical collections), differentiating them from ordinary italic or bold letters. Because the meaning depends on the surrounding notation, itβs best to use π when your document or template expects a double-struck capital K. Itβs also used in design and publishing when you want a consistent mathematical look.
Common uses
- β’Writing mathematical formulas that require a double-struck capital K
- β’Labeling sets or categories in technical documents and notes
- β’Creating consistent typographic styling in academic-style posters or slides
- β’Using in notation for variables/constants where a double-struck font is specified
- β’Designing math-themed graphics, icons, or UI elements
Examples
π β Mathematical Double-Struck Capital K
- πLet π be a field.
- πAssume π β β.
- πDefine the operator on π.
- πWe work within π under addition and multiplication.
- πA function f: π β π.
Variations
Ready to copy
Technical codes
| Unicode | U+1D542 | |
| HTML Entity | 𝕂 | |
| HTML Code | 𝕂 | |
| CSS | \1D542 | |
| Decimal | 120130 |
How to type Mathematical Double-struck Capital K Symbol (π)
On Windows
In Word, type 1D542 then press Alt + X. Or open the emoji picker with Windows key + period.
On Mac
Press Control + Command + Space to open Character Viewer and search for the character.
On Linux
Press Control + Shift + U, type 1d542, then press Enter or Space.
Anywhere
Copy π with the button above and paste it wherever you need it β this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does the Mathematical Double-struck Capital K symbol mean?
The character π (MATHEMATICAL DOUBLE-STRUCK CAPITAL K, U+1D542) is part of the βdouble-struckβ style used in mathematics. In many texts and typesetting conventions, double-struck capitals are used to represent specific sets or structured objects (for example, common number systems or named mathematical collections), differentiating them from ordinary italic or bold letters. Because the meaning depends on the surrounding notation, itβs best to use π when your document or template expects a double-struck capital K. Itβs also used in design and publishing when you want a consistent mathematical look.
What Unicode character is π?
π is MATHEMATICAL DOUBLE-STRUCK CAPITAL K with Unicode code point U+1D542.
How can I copy π into my document?
Copy the character π from this page and paste it into your editor, design tool, or document.
What HTML entity or code escapes can I use?
HTML: 𝕂 . CSS escape: \\1D542 . JavaScript escape: \\u{1D542} .
Does π always mean the same thing in math?
No. Its exact meaning depends on your notation, but itβs commonly used in mathematical writing to represent objects where a double-struck capital K is specified.