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arXiv 1004.0401math.DGmath.FA
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流形上的L^p变量变换不等式

L^p change of variables inequalities on manifolds

Ari Stern

摘要:

本文证明了定向体积和黎曼流形上的向前推或向后拉(关于保持方向的单同态)的$L^p$ -范数的双边不等式.对于体积流形上的函数或密度,这些边界仅取决于雅可比行列式,它通过变量变换定理产生。对于任意微分形式的黎曼流形,然而,这些界限取决于更一般的“谱”性质的同胚,使用适当定义的概念奇异值。这些谱项推广了雅可比行列式,其在函数和密度的特殊情况下恢复(即,底部和顶部形式)。

英文摘要:

We prove two-sided inequalities for the $L^p$-norm of a pushforward or pullback (with respect to an orientation-preserving diffeomorphism) on oriented volume and Riemannian manifolds. For a function or density on a volume manifold, these bounds depend only on the Jacobian determinant, which arises through the change of variables theorem. For an arbitrary differential form on a Riemannian manifold, however, these bounds are shown to depend on more general "spectral" properties of the diffeomorphism, using an appropriately-defined notion of singular values. These spectral terms generalize the Jacobian determinant, which is recovered in the special cases of functions and densities (i.e., bottom and top forms).

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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