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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 * The Sheffer stroke ==See also== * Arrow (disambiguation) * * ↓ (disambiguation) * * → (disambiguation) * * ← (disambiguation) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「↑」の詳細全文を読む スポンサード リンク
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