In this paper, the symmetries and Lie algebra of a coupled nonlinear wave equation were discussed. One-parameter transformation groups of this equation were obtained by using the symmetries.
主要考虑非线性波方程组的一些简单对称及其构成的李代数，并利用所得对称给出该方程组的一些单参数变换群。
To improve measurement precision of gyroscope, a novel nonlinear error compensation model is proposed using an algebra algorithm of neural networks.
为了提高陀螺仪的测量精度，基于神经网络代数算法提出一种新的非线性误差补偿模型。
We can distinguish nonlinear automorphism of polynomials algebra by using the test polynomials.
给出了一类新的试验多项式，可识别多项式代数的非线性自同构。
Differential algebraic strategy can be applied to address the dynamic feedback control problems effectively in the nonlinear systems, with Flatness an important concept in the differential algebra.
微分代数采用动态反馈控制实现一类非线性系统的控制，平滑性是微分代数的重要概念。
A computer algebra analysis method of weak controllability and weak observability for nonlinear systems is discussed.
讨论非线性系统弱能控性与弱能观性计算机代数的分析方法。
Based on modern differential geometric approach and Lie algebra, nonlinear control theory has formed a new theoretical branch.
基于近代微分几何理论与李代数之上的非线性控制理论形成了一新的理论分支。
Using the method of nonlinear Lie algebra, the tensors of ladder operators are obtained.
用非线性李代数方法 ，对关于角动量的阶梯算符进行了研究。
Using the method of nonlinear Lie algebra, the tensors of ladder operators are obtained.
用非线性李代数方法 ，对关于角动量的阶梯算符进行了研究。
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