↑

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

Notation

 * ↑, a mathematical symbol for "undefined"
 * ↑, a mathematical symbol for "approaching from below"
 * ↑, 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

 * ↑, 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 (^).