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arXiv 1104.0965math.DGmath.CA
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三阶常微分方程组及其特征联系

Third Order ODEs Systems and Its Characteristic Connections

Alexandr Medvedev

摘要:

我们计算了一个三阶常微分方程组的特征Cartan联络。我们的联络不同于Tanaka正规联络,但仍然唯一地与三阶常微分方程组相联系。这使我们能够找到一个三阶常微分方程组的所有基本不变量,特别是,确定一个三阶常微分方程组何时是可平凡化的。作为应用,计算了${\mathbb R}^n$中圆上方程的微分不变量.

英文摘要:

We compute the characteristic Cartan connection associated with a system of third order ODEs. Our connection is different from Tanaka normal one, but still is uniquely associated with the system of third order ODEs. This allows us to find all fundamental invariants of a system of third order ODEs and, in particular, determine when a system of third order ODEs is trivializable. As application differential invariants of equations on circles in ${\mathbb R}^n$ are computed.

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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