arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv math-ph/0203013math-phmath.MPmath.SG
收藏

允许共形辛约化的对称非完整系统

Nonholonomic systems with symmetry allowing a conformally symplectic reduction

Pedro de M. Rios, Jair Koiller

摘要:

非完整力学系统在约束空间中可以用退化的几乎泊松结构(去掉雅可比恒等式)来描述。如果有足够多的横向对称的约束,系统减少到一个非退化的几乎泊松结构的“压缩”空间。在这里,我们表明,在最简单的非完整系统中,在有利的情况下,压缩系统是共形辛的,尽管“非压缩”约束系统永远不允许Jacobi结构(在Marle等人的意义上)。

英文摘要:

Non-holonomic mechanical systems can be described by a degenerate almost-Poisson structure (dropping the Jacobi identity) in the constrained space. If enough symmetries transversal to the constraints are present, the system reduces to a nondegenerate almost-Poisson structure on a ``compressed'' space. Here we show, in the simplest non-holonomic systems, that in favorable circumnstances the compressed system is conformally symplectic, although the ``non-compressed'' constrained system never admits a Jacobi structure (in the sense of Marle et al.).

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。

↑