MOVEMENT OF CENTERS WITH RESPECT TO VARIOUS POTENTIALS

作者：Sakata Shigehiro^*

来源：Transactions of the American Mathematical Society, 2015, 367(12): 8347-8381.

DOI：10.1090/tran/6138

• Hot spot
• Poisson integral
• illuminating center
• solid angle
• r(alpha-m)-potential
• radial center
• Newton potential
• Riesz potential
• Alexandrov's reflection principle
• moving plane method
• minimal unfolded region
• heart

We investigate a potential with a radially symmetric and strictly decreasing kernel depending on a parameter. We regard the potential as a function defined on the upper half-space R-m x (0, +infinity) and study some geometric properties of its spatial maximizer. To be precise, we give some sufficient conditions for the uniqueness of a maximizer of the potential and study the asymptotic behavior of the set of maximizers.
Using these results, we imply geometric properties of some specific potentials. In particular, we consider applications for the solution of the Cauchy problem for the heat equation, the Poisson integral (including a solid angle) and r(alpha-m)-potentials.

• 出版日期2015-12