↑

The symbol ↑, an upward pointing arrow can refer to:

Yn, a Romanian Cyrillic letter
For the symbol, represented in Unicode, see Arrow (symbol)
For the mathematical notation of undefined, see Defined and undefined
For the mathematical notation of iterated exponentiation, see Knuth's up-arrow notation
For the mathematical game theory position Up, see Up (game theory)
It also resembles the medieval Roman numeral for 900.
Up arrow key

See also