Mathematical Double-struck Small I Symbol
π is the mathematical double-struck small i character used for specific symbol styling in technical writing.
U+1D55A
π is a Unicode math symbol: MATHEMATICAL DOUBLE-STRUCK SMALL I (U+1D55A). Itβs commonly used when you want an βidentity-likeβ or formally styled small i in mathematical notation and typography. Use it via copy/paste, or by its Unicode escapes in code.
Mathematical Double-struck Small I Symbol Meaning
The character π is Unicodeβs βMATHEMATICAL DOUBLE-STRUCK SMALL Iβ (U+1D55A). It belongs to the Math category and is intended for formal mathematical typography where a double-struck style is preferred. In practice, itβs often used as a styled variable or symbol in documents, slide text, or web content that mixes math-like lettering with regular text. Because itβs a distinct Unicode code point, you should copy the exact character or use its escape sequences to ensure consistent rendering across devices that support the font.
Common uses
- β’Labeling variables or constants in math notes where a double-struck small i is needed
- β’Writing typed formulas in plain text for documents that donβt support LaTeX
- β’Designing math-themed posters or infographics that require a specific typographic style
- β’Creating consistent symbol sets in educational materials and worksheets
- β’Using in web UI text to match mathematical notation styling in custom components
Examples
π Mathematical Double-Struck Small I
- πLet π be a symbol representing a chosen index.
- πIn this definition, π denotes the special constant.
- πWe track each entry using π across the table.
- πThe operator is applied to π in the second step.
- πUse π to reference the same quantity throughout.
Variations
Ready to copy
Technical codes
| Unicode | U+1D55A | |
| HTML Entity | 𝕚 | |
| HTML Code | 𝕚 | |
| CSS | \1D55A | |
| Decimal | 120154 |
How to type Mathematical Double-struck Small I Symbol (π)
On Windows
In Word, type 1D55A 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 1d55a, 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 Small I symbol mean?
The character π is Unicodeβs βMATHEMATICAL DOUBLE-STRUCK SMALL Iβ (U+1D55A). It belongs to the Math category and is intended for formal mathematical typography where a double-struck style is preferred. In practice, itβs often used as a styled variable or symbol in documents, slide text, or web content that mixes math-like lettering with regular text. Because itβs a distinct Unicode code point, you should copy the exact character or use its escape sequences to ensure consistent rendering across devices that support the font.
What is the Unicode code point for π?
π is U+1D55A (MATHEMATICAL DOUBLE-STRUCK SMALL I).
How can I copy π reliably into HTML?
You can paste the character directly, or use the HTML entity 𝕚.
What escape sequence can I use in JavaScript?
In JavaScript, you can use \\u{1D55A}.
Will π always render correctly on every device?
It will render correctly only if the userβs system has a font that supports this Unicode character; otherwise it may appear as a missing glyph.