positive definiteness covariance 正定协方
Not positive definiteness 非正定性
positive definiteness matrix 正定矩阵
uniformly positive definiteness 一致正定性
symmetric positive definiteness 对称正定性
generalized positive definiteness 广义正定性
polynomial positive definiteness 多项式的正定性
sub positive definiteness matrix 亚正定阵
以上来源于: WordNet
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