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-   -   (a^m^2 + 1) | (a^n^2 - 1) ? (http://www.physicsforums.com/showthread.php?t=95158)

JdotAckdot Oct17-05 09:51 AM

(a^m^2 + 1) | (a^n^2 - 1) ???
 
I'm sure there is a quick trick I'm missing somewhere... but anyone have any ideas on how to prove:

(a^m^2 + 1) | (a^n^2 - 1) , for n > m.

[Show [a^(n^2) -1] is divisible by [a^(m^2) +1]

Thanks a lot. . .

(I've tried letting k=n-m, and other stuff like that... kept going in circles. I'm guessing Fermat's Little Thm comes in somewhere?)

Muzza Oct17-05 09:57 AM

It's not true. A counterexample exists among the very small integers...


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