Other unsolved mathematical mysteries are akin to the branches of trees. The trees themselves—fields within the wider subject ...
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类数1表示分解为素数是唯一的,而更高的类数表示数字可以分解为不可约因子的多种方式。 分圆域(cyclotomic field)是一种数字系统,它通过包含某些虚数而获得,这些虚数是1的根——其幂等于1。 这些数字可以被认为是圆上的点,乘法使它们绕圆旋转。