According to N, the order of the multiplicative character x of G(x), being odd or even, we discuss two different cases.
根据高斯和中乘法特征的次数N为奇数或偶数，分为两种情况讨论。
参考来源 - 指数4情形下高斯和的决定
乘法特贞
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Multiplicative character
abstract:A multiplicative character (or linear character, or simply character) on a group G is a group homomorphism from G to the multiplicative group of a field , usually the field of complex numbers. If G is any group, then the set Ch(G) of these morphisms forms an abelian group under pointwise multiplication.