Double Up Tack
Part of Math Symbols
Double Up Tack has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- ⫫
- Unicode
- U+2AEB
About this symbol
⫫ means independence in probability: X ⫫ Y says that knowing X tells you nothing about Y. The statistician Philip Dawid introduced the notation for conditional independence in 1979.
Unicode facts
- Official name
- DOUBLE UP TACK
- Also called
- Independence
- Type
- Maths symbol
- Unicode block
- Supplemental Mathematical Operators
- Unicode group
- Tacks and turnstiles
- Added in
- Unicode 3.2 (2002)
- Unicode notes
- Probability theory
Click the symbol or any value at the top of the page to copy it. See the full Math Symbols chart for related characters.