回复：We only check |y^2-P|=2,If there is no solution,the Q has no

来源: calligraphy 于 2011-01-27 07:11:39 [] [旧帖] [给我悄悄话] 阅读数 : (3010 bytes)

 

Theorem 4.

 

For any positive nonsquare integer D, the equation x2−Dy2 = 1

has

a nontrivial integral solution

 

(x, y)

.

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