↑

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. ↑, Tyr rune in Norse Heathenry. An egressive sound, in phonetics