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[不等式] 单变量的平方和(SOS)有理系数多项式都可以表示为有理系数多项式的平方和

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hbghlyj posted 2025-3-24 15:57 |Read mode
我记得在单变量情况下,每个非负多项式都是平方和,因为单变量多项式在实域上分解成一次和不可约二次因子的乘积。

MathOverflow有帖子说,在单变量情况下,每个非负有理系数多项式都能表示为有理系数多项式的平方和,如何证明?

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