arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1910.03301math-phmath.DGmath.MP
收藏

几何流体力学:从欧拉到庞加莱,再到阿诺德

Geometric Hydrodynamics: from Euler, to Poincaré, to Arnold

Klas Modin

摘要:

这些是在数学系短期冬季课程的讲义,科英布拉大学,葡萄牙,2018年12月6日至8日。该课程是第13届国际青年研究人员几何,力学和控制研讨会的一部分。在三个讲座中,我追溯了数学和力学的三位英雄的工作:欧拉,庞加莱和阿诺德。这导致了讲座的目的:解释阿诺德的发现,从1966年的解决方案,欧拉方程的运动的不可压缩流体对应测地线的无穷维黎曼流形的体积保持超同态。在许多方面,这一发现是几何流体动力学领域的基础,今天的几何流体动力学不仅仅包括欧拉方程,还与许多其他领域有着深刻的联系,如最佳运输,形状分析和信息论。

英文摘要:

These are lecture notes for a short winter course at the Department of Mathematics, University of Coimbra, Portugal, December 6--8, 2018. The course was part of the 13th International Young Researchers Workshop on Geometry, Mechanics and Control. In three lectures I trace the work of three heroes of mathematics and mechanics: Euler, Poincaré, and Arnold. This leads up to the aim of the lectures: to explain Arnold's discovery from 1966 that solutions to Euler's equations for the motion of an incompressible fluid correspond to geodesics on the infinite-dimensional Riemannian manifold of volume preserving diffeomorphisms. In many ways, this discovery is the foundation for the field of geometric hydrodynamics, which today encompasses much more than just Euler's equations, with deep connections to many other fields such as optimal transport, shape analysis, and information theory.

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。

↑