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

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9 Why is $\lim_{x\to 1}\sqrt{1-x}\sum_{n=0}^\infty x^{n^2}=\sqrt{\pi}/2\,\,$? [duplicate] Aug 9 '16
8 Orthonormal basis of $\{(x_1, \dots, x_n) \mid x_1+x_2+\cdots+x_n=0\}$ [duplicate] Aug 1 '16
8 The existence of $a,b$ such that $\int_a^b f(x)dx=\int_a^b g(x)dx=1/2$. [duplicate] Aug 27 '19
8 Any complex number can be the eigenvalue of some non-negative matrix Nov 7 '14
7 Existence of $\xi$ and $\eta$ such that $f'(\xi)+f'(\eta)=\xi+\eta$ Sep 15 '16
6 Integral equals to the intermediate value Jul 7 '14
6 An inequality related to the cosine theorem Nov 30 '14
6 Find an integral with fractions Dec 10 '14
6 A matrix with all entries being positive, each row has the same sum. 2 days ago
5 All the $k\times k$ minors determines the matrix? Oct 28 '14
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