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arXiv 2105.02424math.AP
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具有间断非线性项的各向异性加权扩散方程解的径向对称性

Radial symmetry of solutions to anisotropic and weighted diffusion equations with discontinuous nonlinearities

Serena Dipierro, Giorgio Poggesi, Enrico Valdinoci

摘要:

证明了一类加权各向异性问题有界非负解的径向对称性。考虑到我们处理的各向异性设置,术语“径向”在芬斯勒框架中被理解。在全空间中,J. Serra在各向同性的无权条件下得到了对称性结果。在这种情况下,我们提供了他的结果的各向异性设置的扩展。这为Gidas-Ni-Nirenberg的一个著名结果的各向异性设置提供了一个推广,并且这样的推广即使对于线性算子只要维数大于2的情况也是新的。在适当的锥,结果是新的,即使在各向同性和unweighted设置适当的非线性情况。即使是以前已知的情况下,未加权各向同性设置,本文件提供了一种方法的问题,利用积分(中)等式,这是新的$N>2$:这补充了相应的对称性结果通过移动平面的方法Berestycki-Pacella。

英文摘要:

We prove radial symmetry for bounded nonnegative solutions of a weighted anisotropic problem. Given the anisotropic setting that we deal with, the term "radial" is understood in the Finsler framework. In the whole space, J. Serra obtained the symmetry result in the isotropic unweighted setting. In this case we provide the extension of his result to the anisotropic setting. This provides a generalization to the anisotropic setting of a celebrated result due to Gidas-Ni-Nirenberg and such a generalization is new even for in the case of linear operators whenever the dimension is greater than 2. In proper cones, the results presented are new even in the isotropic and unweighted setting for suitable nonlinear cases. Even for the previously known case of unweighted isotropic setting, the present paper provides an approach to the problem by exploiting integral (in)equalities which is new for $N>2$: this complements the corresponding symmetry result obtained via the moving planes method by Berestycki-Pacella.

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