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# Questions

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### Rational points on $\frac{ x^k-y^k }{ x-y } - (x-y)^{k-2} = 0$ , $k>3$, genus 0

apr 20 11 at 6:25 Qiaochu Yuan 38.4k5116301

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### Working in a ring with something similar to elliptic curve factorization?

mar 13 11 at 6:49 jerr18 27429

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### Second stage of elliptic curve factorization via random walk/Pollard’s rho in constant (or low) memory?

mar 9 11 at 8:12 Steven Galbraith 311

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### Can a polynomial size CFG describe the finite language \{$w \pi(w)$ : $\pi(w)$ is fixed string permutation, $|w|=n$ is fixed\} over alphabet \{0,1\}?

feb 19 11 at 15:22 MathOverflow 123

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### Can the number of solutions $x(y^2-x-1)=n$ in $\mathbb{Z}$ (or $\mathbb{Z}[t]$) be unbounded?

jan 26 11 at 15:41 Joe Silverman 7,8002445

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### Can the number of solutions $xy(x-y-1)=n$ for $x,y,n \in Z$ be unbounded as n varies?

jan 7 11 at 19:25 jerr18 27429

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