# ↑

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The symbol **↑**, an **upward pointing arrow**, also called **up arrow**, **uparrow**, or **upwards arrow**, may refer to:

## Notation[edit]

- ↑, a mathematical symbol for "undefined"
- ↑, a notation of Knuth's up-arrow notation for very large integers
- ↑, a mathematical game theory position
*Up* - ↑ or Sheffer stroke, the logical connective "not both" or NAND
`↑`

, the APL function 'take'- "Increased" (and similar meanings), in medical notation
- ↑, a chemical symbol for production of gas, which bubbles up.

## Character representations[edit]

- ↑, upwards arrow, a Unicode arrow symbol
- ↑,
`↑`

, a HTML or XML character entity - ↑, codepoint 8A (hex) in EBCDIC Code page 293, used for writing APL
- ↑, the glyph for character 94 (decimal) in ASCII until 1967, when it was replaced by the caret (^).

## See also[edit]

- Ꙟ, an archaic Romanian Cyrillic letter
- Arrow keys, on computer keyboards
- Arrow (disambiguation)
- Up (disambiguation)