Mathematical Bold Italic Small Sigma Symbol
π is the mathematical bold italic small sigma character (U+1D748).
U+1D748
π (MATHEMATICAL BOLD ITALIC SMALL SIGMA) is a Unicode math symbol used to represent a specific styled form of sigma. You can copy it for documents, design mockups, or code where a bold italic sigma is needed. Itβs different from the regular Ξ£ or Ο in both shape and typographic styling.
Mathematical Bold Italic Small Sigma Symbol Meaning
π is a styled variant of the Greek letter sigma, specifically βmathematical bold italic small sigma.β In practice, itβs used when authors need sigma with a particular mathematical typography: bold weight and italic slant, typically in contexts like equations, vectors/matrices notation, or custom symbol sets for technical writing. Because itβs the βsmallβ form, itβs intended to look like lowercase sigma (Ο-like) rather than the uppercase Ξ£. Use it when you specifically want the bold italic small-sigma glyph rather than a plain Ο or a different weight/style of sigma.
Common uses
- β’Typing equations where a bold italic lowercase sigma is required
- β’Branding or UI design for math-focused products needing a distinctive sigma glyph
- β’Labeling variables in reports or documentation (e.g., denoting a parameter with sigma styling)
- β’Creating consistent symbol palettes for scientific posters and slides
- β’Including the symbol in web or app content to match a chosen math typography style
Examples
π Mathematical Bold Italic Small Sigma
- πLet π represent a parameter in the model.
- πCompute the sum using π as the summand notation.
- πDefine π to be the sigma value under bold-italic styling.
- πIn this equation, π replaces the standard Ο for emphasis.
- πThe variable π is used in the recurrence relation.
Variations
Ready to copy
Technical codes
| Unicode | U+1D748 | |
| HTML Entity | 𝝈 | |
| HTML Code | 𝝈 | |
| CSS | \1D748 | |
| Decimal | 120648 |
How to type Mathematical Bold Italic Small Sigma Symbol (π)
On Windows
In Word, type 1D748 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 1d748, 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 Bold Italic Small Sigma symbol mean?
π is a styled variant of the Greek letter sigma, specifically βmathematical bold italic small sigma.β In practice, itβs used when authors need sigma with a particular mathematical typography: bold weight and italic slant, typically in contexts like equations, vectors/matrices notation, or custom symbol sets for technical writing. Because itβs the βsmallβ form, itβs intended to look like lowercase sigma (Ο-like) rather than the uppercase Ξ£. Use it when you specifically want the bold italic small-sigma glyph rather than a plain Ο or a different weight/style of sigma.
What Unicode character is π?
π is MATHEMATICAL BOLD ITALIC SMALL SIGMA with code point U+1D748.
How do I copy π?
Select the symbol on this page (π), copy it, and paste into your document or design tool. You can also paste the HTML entity or escapes given by your environment if supported.
Is π the same as Ο or Ξ£?
No. π is a specific styled βbold italic small sigmaβ glyph. It will not be the same as the plain lowercase sigma (Ο) or uppercase sigma (Ξ£).
Will π display correctly on all devices?
Font support varies. If a font doesnβt include this Unicode character, it may show a fallback glyph. For math-heavy content, use a Unicode-capable font.