Abstract
In this paper, variational inclusions of Euler--Lagrange types, governed by two-dimensional isotropic-anisotropic singular diffusions, are considered. On that basis, we focus on the geometric structures of free boundaries where anisotropic conditions tend to isotropic. In this light, a limit-set of special piecewise-constant solutions will be presented. The objective in this paper is to give some observations on the upper bounds of the limit set with geometric characterizations. As a consequence, it will be shown that the isotropic free boundaries, as in the limit set, consist of a finite number of $ C^{1,1} $-Jordan curves, and these have certain geometric connections with the approaching anisotropic situations. Observations for the lower bounds will be studied in the sequel to this paper.
Citation
Ken Shirakawa. "Limiting observations for planar free-boundaries governed by isotropic-anisotropic singular diffusions, upper bounds for the limits." Adv. Differential Equations 18 (3/4) 351 - 383, March/April 2013. https://doi.org/10.57262/ade/1360073020
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