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( mathbb N = left lbrace 1 , 2 , 3 , 4 ldots right rbrace ) ( mathbb Z = left lbrace - 3 , - 2 , - 1 , 0 , 1 , 2 , 3 , ldots . right rbrace ) ( mathbb Q = left lbrace pi , 1 , e ld | Suva Ai