Methods Using the theorem of center manifold and bifurcation theory of planar system.

方法利用中心流形定理并结合平面系统的分支理论。

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A new way to prove Lagrange's mean value theorem is given using the theorem of interval nest.

应用区间套定理给出了拉格朗日中值定理一个新的证明。

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Using the theorem of linear Diophantine equations and the Chinese remainder theorem, we have constructed a class of trap-door knapsack public-key cryptosystems, which have a better security.

利用不定方程理论及中国剩余定理，我们设计了一类陷门背包公开钥密码系统，它们具有更好的安全性。

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