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Luis H Gallardo
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14
Are nontrivial integer solutions known for $x^3+y^3+z^3=3$?
Mar 11 '11
11
Status of the Hadamard Circulant conjecture
Feb 15 '11
9
All polynomials over a finite field are sums of $2$ square-free polynomials
Jan 18 '11
9
Is this a (well known) open problem?(infinitness and more on $anm \pm n\pm m$ )
Jan 27 '11
8
Old question of Serre on discriminants of a sequence of polynomials
Jan 14 '11
6
Perfect numbers $n$ such that $2^k(n+1)$ is also perfect
May 8 '11
5
Positive integers $n$ that divide $\sigma_2(n)$
Jan 11 '11
4
Irreducibility of some trinomials modulo $p$
Feb 24 '11
4
The diophantine eq. $x^4 +y^4 +1=z^2$
Apr 20 '11
3
Which rationals are sum-of-divisor function quotients
Apr 15 '11

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