Perturbation analysis of the canonical subspaces: This paper gives the least perturbation bound of the unitary factor on the unitary decomposition.

标准子空间的扰动分析：本文给出了矩阵的酉分解中酉因子的最小扰动界。

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The research assumptions and indicators for social capital from peasants are made, and a factor analysis and index decomposition is carried on social capital from peasants.

设定农户社会资本的研究假设与指标，对农户社会资本进行因子分析和指数分解。

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