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arXiv 1204.3155math.DG
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关于保体积嵌入空间的注记

Remarks on the space of volume preserving embeddings

Mathieu Molitor

摘要:

设(N,g)是一个黎曼流形.对于N的紧致连通定向子流形M.我们将保体积嵌入空间Emb_μ(M,N)定义为光滑嵌入的集合f:M \rightarrow N,使得f*μ^{f}=μ,其中μ^{f}(resp.μ)是f(M)(resp. M)(f(M)上的取向由f引起)。本文利用Nash-Moser反函数定理证明了在Emb_μ(M,N)中中曲率处处不为零的保体积嵌入集构成一个驯服的Fréchet流形,并明确地确定了一类自然Lagrange算子的Euler-Lagrange方程.作为应用,我们将不可压缩流体的欧拉方程推广到任意维的“不可压缩膜”在N中运动的情况。

英文摘要:

Let (N,g) be a Riemannian manifold. For a compact, connected and oriented submanifold M of N. we define the space of volume preserving embeddings Emb_μ(M,N) as the set of smooth embeddings f:M \rightarrow N such that f*μ^{f}=μ, where μ^{f} (resp. μ) is the Riemannian volume form on f(M) (resp. M) induced by the ambient metric g (the orientation on f(M) being induced by f). In this article, we use the Nash-Moser inverse function Theorem to show that the set of volume preserving embeddings in Emb_μ(M,N) whose mean curvature is nowhere vanishing forms a tame Fréchet manifold, and determine explicitly the Euler-Lagrange equations of a natural class of Lagrangians. As an application, we generalize the Euler equations of an incompressible fluid to the case of an "incompressible membrane" of arbitrary dimension moving in N.

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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