Interior H\"older regularity for stable solutions to semilinear elliptic equations up to dimension 5

Fa Peng; Yi Ru-Ya Zhang; Yuan Zhou

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arXiv · 2204.06345

Interior H\"older regularity for stable solutions to semilinear elliptic equations up to dimension 5

Fa Peng·Yi Ru-Ya Zhang·Yuan Zhou

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Abstract

Let $2\le n\le 5$. We establish an apriori interior H\"older regularity of $C^2$-stable solutions to the semilinear equation $-\Delta u=f(u)$ in any domain of $R^n$ for any nonlinearity $f\in C^{0,1}(R) $.If $f $ is nondecreasing and convex in addition,we obtain an interior H\"older regularity, and hence the local boundedness, of $W^{1,2}(\Omega)$-stable solutions by locally approximating them via $C^2(\Omega)$-stable solutions. In particular, we do not require any lower bound on $f$.

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Fa Peng, Yi Ru-Ya Zhang, Yuan Zhou. 2022-04-13. Interior H\"older regularity for stable solutions to semilinear elliptic equations up to dimension 5. https://arxiv.org/abs/2204.06345

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