Sangchul Lee
Reputation
1737/1000 score
5 99 170
Impact
~370k people reached

# 27 Questions

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### Generalizing $\int_{0}^{1} \frac{\arctan\sqrt{x^{2} + 2}}{\sqrt{x^{2} + 2}} \, \frac{\operatorname dx}{x^{2}+1} = \frac{5\pi^{2}}{96}$

mar 27 at 15:31 Just a try 1
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### Is there a closed form for this sum?

nov 12 '13 at 16:39 Sangchul Lee 49.5k
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### Probability on entering direction of a simple random walk

mar 24 '15 at 1:48 Sangchul Lee 49.5k
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### How can we prove a simple case of the High Indices Theorem?

may 31 '11 at 2:57 Eric Naslund 51.7k
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### Complex 'mean-value-theorem'-like property implies quadratic

oct 27 at 23:36 Sangchul Lee 49.5k
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### Asymptotics of the solution of $G_n(t) = \text{const}$, where $G_n(t) = e^t (1 + r^{-1}(G_{n-1}(t) - 1))^{r}$.

feb 24 at 15:22 Sangchul Lee 49.5k
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### Proving generalized Cassini's identity using determinant?

jan 9 '15 at 23:00 Sangchul Lee 49.5k

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### Constructing an incomplete ordered field satisfying the nested interval property

mar 31 '13 at 14:20 Sangchul Lee 49.5k

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### Estimating the sum $\sum_{y \in \Bbb{Z}^d} (|y|+1)^{-\alpha}(|x-y|+1)^{-\beta}$ as $|x| \to \infty$

feb 2 at 19:36 Sangchul Lee 49.5k

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