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矩阵平方根和逆平方根的高效计算
https://spaces.ac.cn/archives/11158
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设$\boldsymbol{P}\in\mathbb{R}^{n\times n}$是一个特征值都是非负实数的$n$阶方阵，本文来讨论它的平方根$\boldsymbol{P}^{1/2}$和逆平...
