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Mathematics
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Robert
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8
Re-arrangements of $(1,1,2,2,3,3,4,4)$ with $(1,2,3,4)$ as a subsequence
Aug 16, 2023
7
Harmonic series multiplied by $-2$ every third term converges to $\ln 3$
Aug 7, 2023
4
Continuously extending a $p$-adic function to $\Bbb{Q}_p$
Dec 14, 2023
4
If $\sum_{n=1}^\infty a_n^2$ converges, then $\lim_{n\to \infty} \frac 1 {\sqrt n} \sum_{k=1}^n a_k =0$
May 19
3
Limit $\lim _{t\to \infty} \int_t^\infty t \frac {\sin^2 (u)}{u^2} du$
Apr 29, 2023
3
Bondy, Murty Graph Theory exercise 16.2.12 (by Noga Alon)
Aug 18, 2023
3
If $A$ is a Jacobson ring, so is $A[X]$
Mar 10
3
Orbit functor is not co-representable
Apr 7
2
Minimal slices for dividing $m$ pizzas to $n$ people is $m+n-\gcd(m,n)$
Jun 24, 2023
2
$\lim_{x\to \infty} \left(\int_0^x e^{t^2} dt\right)^{\frac 1 {x^2}}$
Aug 9, 2023