Up Tack
Part of Math Symbols
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+22A5
About this symbol
In logic ⊥ stands for a contradiction, a statement that is always false, and computer scientists call it bottom. Geometry uses a look-alike for perpendicular lines, but Unicode gives that its own character, ⟂.
Unicode facts
- Official name
- UP TACK
- Also called
- Base, bottom
- Type
- Maths symbol
- Unicode block
- Mathematical Operators
- Unicode group
- Miscellaneous mathematical 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.