$\mathcal{C}^α$-regularity for nonlinear non-diagonal parabolic systems
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866911296125927424 |
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| author | Bulíček, Miroslav Frehse, Jens |
| author_facet | Bulíček, Miroslav Frehse, Jens |
| contents | In the elliptic theory for $p$-Laplacian-like problems, the Hölder continuity of solutions has been proven for problems arising as Euler--Lagrange equations of a convex potential with $p$-growth that additionally satisfies the splitting condition.
In this article, we extend these results to the parabolic setting. We investigate nonlinear parabolic systems whose structure parallels the elliptic case but incorporates time dependence. Assuming suitable space-time regularity of $F$ and natural structural conditions analogous to the stationary theory, we establish $\mathcal{C}^α$-regularity of weak solutions in space and time whenever the growth parameter $p>d/2$. This extends the classical result for parabolic systems, which is valid only for $p>d-2$. This is the only regularity result for systems that are far from the radial (Uhlenbeck) structure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_01122 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | $\mathcal{C}^α$-regularity for nonlinear non-diagonal parabolic systems Bulíček, Miroslav Frehse, Jens Analysis of PDEs 35B65, 35K55, 35K65, 35K40 In the elliptic theory for $p$-Laplacian-like problems, the Hölder continuity of solutions has been proven for problems arising as Euler--Lagrange equations of a convex potential with $p$-growth that additionally satisfies the splitting condition. In this article, we extend these results to the parabolic setting. We investigate nonlinear parabolic systems whose structure parallels the elliptic case but incorporates time dependence. Assuming suitable space-time regularity of $F$ and natural structural conditions analogous to the stationary theory, we establish $\mathcal{C}^α$-regularity of weak solutions in space and time whenever the growth parameter $p>d/2$. This extends the classical result for parabolic systems, which is valid only for $p>d-2$. This is the only regularity result for systems that are far from the radial (Uhlenbeck) structure. |
| title | $\mathcal{C}^α$-regularity for nonlinear non-diagonal parabolic systems |
| topic | Analysis of PDEs 35B65, 35K55, 35K65, 35K40 |
| url | https://arxiv.org/abs/2512.01122 |