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The group of rational points on the unit circle

 math.AG, math.NT  Add comments
Jul 052015
 

单位圆上有理点的群结构

这是一个交换群, 其加法定义为

\[ (x, y)\oplus (z, w) = (xz − wy, xw + yz).\]

 Posted by zyymat at 7:35 pm  Tagged with: elliptic curves

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  Rational points on a circle   \(\{\sqrt n\}\) is linearly independent over the rationals

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