本文研究了底空间为实射影空间时上协边类纤维丛表示的若干性质。

In this paper we deal with some properties of cobordism classes of fiber bundles over the real projective space.

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勒贝格可测集和疏朗完备集是两类重要集合，是实变函数中的重要内容。

Lebesgue measurable set and the complete and nowhere dense set are two kinds of important set and are the important content in the real variable function.

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本文给出一类适合于求解多项式实零点问题的神经网络。理论分析和模拟结果都表明，这类网络可实时求解多项式实零点问题。

A neural network model for computing real zeros of polynomials is presented. Both the mathematical analysis and the experimental results show that the proposed network is effective.

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