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Alexey Ustinov
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Solving hard problems by easy methods

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question
54
Most intriguing mathematical epigraphs
Sep 29, 2015
answer
46
Rediscovery of lost mathematics
Jun 28, 2017
answer
39
Rediscovery of lost mathematics
Apr 12, 2015
answer
36
'Important' applications of p-adic numbers outside of algebra (and number theory).
Oct 29, 2013
answer
36
Examples of unexpected mathematical images
Nov 12, 2016
question
34
"The Two Sheriffs" puzzle
Apr 17, 2015
question
34
Solve in positive integers: $n!=m(m+1)$
Sep 18, 2010
question
33
Applications of finite continued fractions
Dec 19, 2010
question
25
The origin of Discrete `Liouville's theorem'
Nov 22, 2013
question
24
"Gauss trick" vs Karatsuba multiplication
Dec 27, 2018
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Two Sheriffs and Eavesdroppers - 2
8
Is there a cryptographic solution for this “dating protocol”?
7
Fundamental unit in the ring of integers $\mathbb Z[\frac{1+\sqrt{141}}{2}]$
7
How hard is Self-DLOG?

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