Double-struck Italic Small D
Part of Math Symbols
Double-struck Italic Small D has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- ⅆ
- Unicode
- U+2146
About this symbol
ⅆ, a double-struck italic d, marks the d of a derivative or integral, as in ⅆx, as an operator rather than a variable named d. Unicode added it in 2002 for mathematical typesetting.
Unicode facts
- Official name
- DOUBLE-STRUCK ITALIC SMALL D
- Type
- Lowercase letter
- Unicode block
- Letterlike Symbols
- Unicode group
- Double-struck italic math symbols
- Added in
- Unicode 3.2 (2002)
- Unicode notes
- Sometimes used for the differential
Click the symbol or any value at the top of the page to copy it. See the full Math Symbols chart for related characters.