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Arin Chaudhuri

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 10 years, 6 months
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21 Calculating $\lim_{n\to\infty}\sqrt{n}\sin(\sin…(\sin(x)..)$ Jan 12 '13
14 How to prove that the rank of a matrix is a lower semi-continuous function? Sep 5 '16
13 Can a symmetric matrix always be represented as the sum of a positive-definite and negative-definite matrix? Jan 10 '13
13 well separated points on sphere Apr 7 '11
12 Bell numbers and moments of the Poisson distribution Oct 8 '10
11 sign reversing involution proof of a combinatorial identity Oct 14 '10
11 Measurable function remaining constant Oct 1 '10
9 Summation of $\sum\limits_{n=1}^{\infty} \frac{x(x+1) \cdots (x+n-1)}{y(y+1) \cdots (y+n-1)}$ Oct 21 '10
9 Can this sum be simplified: $ \sum_{k=0}^{n-1} { n -1 \choose k } (-2)^{k} (2n - k)! $? Oct 6 '10
9 limit of the sum $\frac{1}{n+1}+\frac{1}{n+2}+\cdots+\frac{1}{2n} $ Jan 23 '13
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