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词语正定拆分为汉字：
正字的拼音、笔画、偏旁部首、笔顺、繁体字，正字字源来历，正字演变
1. 正 [zhèng]2. 正 [zhēng]正 [zhèng]不偏斜，与“歪”相对：～午。～中（zhōng ）。～襟危坐。合于法则的：～当（dāng）。～派。～楷。～规。～大光明。～言厉色。拨乱反～。合于道理的：～道。～确。～义。～气。……
定字的拼音、笔画、偏旁部首、笔顺、繁体字，定字字源来历，定字演变
不动的，不变的：～额。～价。～律。～论。～期。～型。～义。～都（dū）。～稿。～数（shù）（ａ．规定数额；ｂ．指天命；ｃ．规定的数额）。断～。规～。鉴～。使不变动：～案。～罪。决～。确～。平安，平靖（多指局势）：大局已～。镇静，安稳（多指……
汉语拼音：zhèng dìng
If it renamed Zhengding, it looks like that Shijiazhuang was fallen under Zhengding borders, become a accessory of Zhengding.
如果改名正定，像是石家庄划到正定境内，成为正定的附属品。The resulting multi-kernel SVDD could be expressed as an SDP problem, so it could be solved with the global optimal solution.
扩展后的多核支持向量域描述方法可以表述为半正定规划问题，因此可以收敛到全局最优解。positive definite matrices equals the set of stable matrices is established.
正定矩阵类与稳定矩阵类等同。In this paper, some important inequalities on norm of determinent of complex positive definite matrix and its Schur complement are obtained.
正定复矩阵是矩阵论中的一个重要概念，人们已经掌握了它的若干性质与结构。Often in the heart is three to taste, such as law, and also at the heart of the tao, but the heart into words, positive.
常于心之正念，以味之三成，如法而行也，得之心道，乃心之成，法言正定。Positive definite matrix occupies a very important position in matrix theory, and has great value in practice.
正定矩阵在矩阵论中占有十分重要的地位，在实际中也有广泛的应用价值。A matrix is positive semidefinite if and only if each of its eigenvalues is greater than or equal to zero.
矩阵是正定的当且仅当其每一个特征值大于零。The Note to "The Relationship Between Generalized Positive Definite Matrix and Stable Matrix"
关于“广义正定矩阵与稳定矩阵的关系”的注记Zhengding high Zhao, also known in the pennant, originated in the past, the history of over a hundred years have elapsed since.
正定高照，又叫中幡，起源于民国以前，距今已有百余年历史。