然后由债务信度网络构造了容量费用网络，利用最小费用循环流问题给出了该模型的一个多项式算法。

Then we construct a capacity cost network from the debt credit degree network. Finally, by applying minimum cost circulation flow problem, we give a polynomial algorithm for this model.

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最后，在分块反对称反循环矩阵性质的基础上，给出了其特征值和特征多项式以及相似对角阵。

Finally, based on these characteristics, the eigenvalues and eigenvalues polynomials and its diagonal matrix were given.

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给定一个循环码，求取它的覆盖多项式集合目前尚无系统的方法。

For a cyclic code, it is difficult to find the set of it's covering polynomials. We have not had a systematic method to find it.

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