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[数论] 使$p\mid x^n-y^n$的$n$总是等差数列吗?

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hbghlyj posted 2024-11-4 02:44 |Read mode
$x,y\inN_+$,$p$为素数,$p\nmid x-y$,问$\{n\inN:p\mid x^n-y^n\}$总是等差数列吗?

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original poster hbghlyj posted 2024-11-4 02:48
也就是说,设$k=\min\{n\inN_+:p\mid x^n-y^n\}$,是否$\{n\inN:p\mid x^n-y^n\}=k\mathbb{N}=\{0,k,2k,3k,\dots\}$?

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