arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1010.4844math.APmath-phmath.MP
收藏

涡度模式方程的几何

The geometry of a vorticity model equation

Joachim Escher, Boris Kolev, Marcus Wunsch

摘要:

我们提供了严格的证据,修改后的Constantin-Lax-Majda方程模拟涡旋和准地转动力学描述的测测地流流的子组上的方向保持的同态固定一个点,关于右不变度量诱导的齐次Sobolev范数$H^{1/2}$和显示的局部存在的测地线的Sobolev类$H^{k}$与$k\ge 2$的扩展组的保向的同态。

英文摘要:

We provide rigorous evidence of the fact that the modified Constantin-Lax-Majda equation modeling vortex and quasi-geostrophic dynamics describes the geodesic flow on the subgroup of orientation-preserving diffeomorphisms fixing one point, with respect to right-invariant metric induced by the homogeneous Sobolev norm $H^{1/2}$ and show the local existence of the geodesics in the extended group of diffeomorphisms of Sobolev class $H^{k}$ with $k\ge 2$.

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。

↑