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Mathematics
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Robert
  • Member for 1 year, 7 months
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question
8
Re-arrangements of $(1,1,2,2,3,3,4,4)$ with $(1,2,3,4)$ as a subsequence
Aug 16, 2023
question
8
Finding $\sum_{n=0}^∞ \frac{(n!)^2}{(2n)!}$
Sep 26
question
7
Harmonic series multiplied by $-2$ every third term converges to $\ln 3$
Aug 7, 2023
question
4
Continuously extending a $p$-adic function to $\Bbb{Q}_p$
Dec 14, 2023
question
4
Orbit functor is not co-representable
Apr 7
question
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
question
3
Limit $\lim _{t\to \infty} \int_t^\infty t \frac {\sin^2 (u)}{u^2} du$
Apr 29, 2023
question
3
Bondy, Murty Graph Theory exercise 16.2.12 (by Noga Alon)
Aug 18, 2023
question
3
If $A$ is a Jacobson ring, so is $A[X]$
Mar 10
question
3
If $\sum a_n$ and $\sum \ln(1+a_n)$ converge, does $\sum a_n^2$ converge?
Sep 3