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Bibliographic Details
Main Authors: Araújo, Damião, Sobral, Aelson, Teixeira, Eduardo V., Urbano, José Miguel
Format: Preprint
Published: 2024
Subjects:
Online Access:https://arxiv.org/abs/2401.08071
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Table of Contents:
  • We start the investigation of free boundary variational models featuring varying singularities. The theory depends strongly on the nature of the singular power $γ(x)$ and how it changes. Under a mild continuity assumption on $γ(x)$, we prove the optimal regularity of minimizers. Such estimates vary point-by-point, leading to a continuum of free boundary geometries. We also conduct an extensive analysis of the free boundary shaped by the singularities. Utilizing a new monotonicity formula, we show that if the singular power $γ(x)$ varies in a $W^{1,n^{+}}$ fashion, then the free boundary is locally a $C^{1,δ}$ surface, up to a negligible singular set of Hausdorff co-dimension at least $2$.