Mathematics
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r9m
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All Questions Answers
Score Newest
answer
62
An Infinite Double Summation $\sum_{k=1}^{\infty} \sum_{n=1}^{\infty} \frac{1}{n^2k^2(n+k)^2}$?
Nov 5, 2014
question
43
Stronger version of AMM problem 11145 (April 2005)?
Jul 1, 2014
question
39
Evaluating the limit: $\lim\limits_{x \to \infty} \sum\limits_{n=1}^{\infty} (-1)^{n-1}\frac{x^{2n-1}}{(2n)! \log (2n)}$
Feb 13, 2017
question
29
Finding the limit of a sequence with an undesirable $\ln k$
Jun 10, 2014
question
25
Is every natural number representable as $\sum\limits_{k=1}^{n} \pm k^3$?
Dec 23, 2014
answer
22
Evaluate $\sum\limits_{n=1}^{\infty} \frac{2^n}{1+2^{2^n}}$
Nov 26, 2014
question
21
A problem with concyclic points on $\mathbb{R}^2$
Mar 4, 2014
question
21
Sum of Harmonic numbers $\sum\limits_{n=1}^{\infty} \frac{H_n^{(2)}}{2^nn^2}$
Nov 15, 2014
answer
18
How to compute $\int_0^\infty \frac{1}{(1+x^{\varphi})^{\varphi}}\,dx$?
Jun 17, 2015
question
18
Integrating $\int_0^{\pi/2} \frac{\sin^2 ax}{\sin^2 x}\,dx$
Mar 16, 2016
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Does reputation change if an answer gets deleted due to deletion of original post by vote(s)?
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16
Asymptotics of a recurrence relation
14
An inequality improvement on AMM 11145
12
Iwaniec-Kowalski Exponential Sum for Quadratic Function
11
An elementary functional inequality
10
Why didn't Kizaru engage Beckman in the Marineford War?

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