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arXiv 0802.3581nlin.SI
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一阶微分方程组的λ对称化约化

Reduction of systems of first-order differential equations via Lambda-symmetries

G. Cicogna

摘要:

最早由C. Muriel和J.L. Romero的,是扩展到一阶常微分方程的系统(特别是动力系统)的情况下。它表明,这种类型的对称性的存在产生减少的微分方程,限制存在的变量中所涉及的问题。结果进行了比较的情况下,标准的(即精确)李点对称性,并说明了一些例子。

英文摘要:

The notion of lambda-symmetries, originally introduced by C. Muriel and J.L. Romero, is extended to the case of systems of first-order ODE's (and of dynamical systems in particular). It is shown that the existence of a symmetry of this type produces a reduction of the differential equations, restricting the presence of the variables involved in the problem. The results are compared with the case of standard (i.e. exact) Lie-point symmetries and are also illustrated by some examples.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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