给出了两两互素多项式下线性变换的核的直和分解，并应用于幂等矩阵（对合矩阵）的秩的等式证明中。

The direct sum decomposition of the addition of a linear transformation under the coprime polynomial was given, and it was used in the proof of some equality about the rank of idempotent matrix.

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没有太多轰动的新闻，杨幂喜欢以一种普通的方式生活着，直言直语，不隐藏想法，这些都使得她几乎没有丑闻。

Without much of sensationalization, Yang likes living in a natural way, talking straightforward and hiding no emotions, which leaves her few scandals in her tracks.

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