Double-struck Capital Z
Part of Math Symbols
Double-struck Capital Z has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- ℤ
- Unicode
- U+2124
About this symbol
ℤ is the set of integers: whole numbers, positive, negative and zero. The Z comes from the German Zahlen, numbers. Mathematicians write it in this “blackboard bold” style, which grew from the way bold letters are drawn with a doubled stroke on a chalkboard.
Unicode facts
- Official name
- DOUBLE-STRUCK CAPITAL Z
- Also called
- The set of integers
- Type
- Uppercase letter
- Unicode block
- Letterlike Symbols
- Added in
- Unicode 1.1 (1993)
Click the symbol or any value at the top of the page to copy it. See the full Math Symbols chart for related characters.