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

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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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