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Alfred Chern
Beijing, China
Age: 22
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7
Please prove: $ \lim_{n\to \infty}\sqrt[n]{\frac{1}{n!}} = 0 $
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6
sum of the series
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6
Does there exist a convergent sequence $\{a_n\}$ such that $n d(a_{n+1},a_n)$ is not bounded?
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