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

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40 What is the simplest lower bound on prime counting functions proof wise? Aug 13 '16
39 What's the sign of $\det\left(\sqrt{i^2+j^2}\right)_{1\le i,j\le n}$? Dec 18 '20
22 Math contest: Find number of roots of $F(x)=\frac{n}{2}$ involving a strange integral. Oct 24 '12
21 If $\int_{\mathbb R^2} \frac{\vert f(x)-f(y)\vert}{\vert x-y\vert^2}dxdy<+\infty$ then $f$ is a.e. constant Oct 30 '13
18 Need a *trivial* proof of an "obvious" combinatorial result Dec 7 '17
17 Optimizing response times of an ambulance corp: short-term versus average Nov 8 '12
17 Is the series $\sum_{i=k}^\infty\frac{\sin\left(\frac{x}{i}\right)}{i}$ bounded? Jul 28
15 Why can't $p^p-(p-1)^{p-1}=n^2$ be a square? Oct 31 '15
14 How to say $(a,b]$ and $[a,b)$ in English? Sep 6 '13
14 Level of Rigor in Mathematical Physics Aug 21 '13
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