One of my friends asked me that is $\varliminf |nsinn|=0$? I think maybe it has some relations with Number theory, But I don't know how to solve it. If you know the answer, please tell me since it really puzzles me!


marked as duplicate by Igor Rivin, Emil Jeřábek, Douglas Zare, Joe Silverman, user9072 Apr 22 '14 at 16:43

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