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arXiv 1708.01231math.FAmath.OC
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Sobolev范数和全变差的非局部逼近的最优常数

Optimal constants for a non-local approximation of Sobolev norms and total variation

Clara Antonucci, Massimo Gobbino, Matteo Migliorini, Nicola Picenni

摘要:

我们考虑了J. Bourgain,H. Brezis和H.- M.在过去十年的一系列论文中。已知这类泛函的Gamma-收敛于Sobolev范数或全变差的适当倍数,取决于可和性指数,但确切的常数和恢复族的结构仍然未知,即使在一维。我们证明了一个伽玛收敛的结果与显式值的常数在任何空间维。我们还证明了存在的恢复家庭组成的光滑函数紧支持。其关键是先将问题降维为一维,再将其转化为一个有限的组合重排不等式。

英文摘要:

We consider the family of non-local and non-convex functionals proposed and investigated by J. Bourgain, H. Brezis and H.-M. Nguyen in a series of papers of the last decade. It was known that this family of functionals Gamma-converges to a suitable multiple of the Sobolev norm or the total variation, depending on the summability exponent, but the exact constants and the structure of recovery families were still unknown, even in dimension one. We prove a Gamma-convergence result with explicit values of the constants in any space dimension. We also show the existence of recovery families consisting of smooth functions with compact support. The key point is reducing the problem first to dimension one, and then to a finite combinatorial rearrangement inequality.

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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