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user75619

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

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  • Member for 6 years, 6 months
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Top posts (52) All Questions Answers | Votes Newest

12 Prove that $\sum\limits_{i=0}^{k} p^{2i}$ ($p$ is prime) is never a perfect square May 2 '13
10 Divisibility of binomial coefficient by prime power - Kummer's theorem Dec 16 '13
9 Find (recursive formulas for) $\sum_{k=1}^n\lfloor k\varphi\rfloor^2$ and/or $\sum_{k=1}^nk\lfloor k\varphi\rfloor$ Nov 9 '17
7 Why is an algebraic field defined with $+ - * /$ rather than other operations? Nov 1 '13
5 What is AM-CM inequality? Jul 27
4 Proofs from the Book - need quick explanation Nov 22 '13
4 Find $\sum_{k=1}^nk\lfloor k\varphi\rfloor$, where $\varphi$ is golden ratio Nov 8 '17
3 IMO 2013, Problem C8 Dec 25 '18
3 Linear relation inside of a triangle Dec 25 '18
2 On a certain bijection of the multiplicative group modulo prime $p=2^k+1$. Dec 18 '18
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