Alef Symbol
Part of Math Symbols
Alef Symbol has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- ℵ
- Unicode
- U+2135
About this symbol
Georg Cantor, who showed that some infinities are larger than others, used aleph, the first letter of the Hebrew alphabet, to name the sizes of infinite sets. Aleph-null is the size of the set of counting numbers 1, 2, 3 and so on, the smallest infinity.
Unicode facts
- Official name
- ALEF SYMBOL
- Type
- Letter
- Unicode block
- Letterlike Symbols
- Unicode group
- Hebrew letterlike math 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.