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Removable set for H\"older continuous solutions of $\mathscr{A}$-harmonic functions on Finsler manifolds

Analysis of PDEs 2025-02-18 v1

Abstract

We establish that a closed set S\mathcal{S} is removable for α\alpha-H\"older continuous A\mathscr{A}-harmonic functions in a reversible Finsler manifold (Ω,F,V)(\Omega, F, \mathtt{V}) of dimension n2n \geq 2, provided that (under certain conditions on (Ω,F,V)(\Omega, F, \mathtt{V}) and the variable exponent pp ) for each compact subset KK of S\mathcal{S}, the n1pK++α(pK+1)\mathrm{n}_1-p_K^{+}+\alpha\left(p_K^{+}-1\right)-Hausdorff measure of KK is zero. Here, pK+=supKpp_K^{+}=\sup _K p and n1\mathrm{n}_1 is chosen so that V(B(x,r))Krn1\mathtt{V}(B(x, r)) \leq \mathtt{K} r^{\mathrm{n}_1} for every ball. The estimates used to remove the singularities will focus on a family {u}JWloc1,p(x)(Ω;V)\left\{u_{\ell}\right\}_{\ell \in \mathcal{J}} \subset W_{\mathrm{loc}}^{1, p(x)}(\Omega ; \mathtt{V}) that converges to uu in a certain sense. As a second main result of this article, we will also obtain an estimate (when limd(x,0Ω)p=1\lim _{d\left(x, 0_{\Omega}\right) \rightarrow \infty} p=1 ) for μ(B(x,r)):=sup{B(x,r)A(,u)DζdV0ζ1 and ζC0(B(x,r))}, \mu_{\ell}(B(x, r)):=\sup \left\{\int_{B(x, r)} \mathscr{A} \left(\cdot, \nabla u_{\ell}\right) \bullet \mathcal{D} \zeta \mathrm{dV} \mid 0 \leq \zeta \leq 1 \text { and } \zeta \in C_0^{\infty}(B(x, r))\right\}, which is related to the measure μ=div(A(,u))\mu=\operatorname{div}( \mathscr{A} (\cdot, \nabla u)).

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Cite

@article{arxiv.2502.11922,
  title  = {Removable set for H\"older continuous solutions of $\mathscr{A}$-harmonic functions on Finsler manifolds},
  author = {Juan Pablo Alcon Apaza},
  journal= {arXiv preprint arXiv:2502.11922},
  year   = {2025}
}

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33 pages