Optimal convergence rates for the finite element approximation of the Sobolev constant
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866910261919612928 |
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| author | Ignat, Liviu I. Zuazua, Enrique |
| author_facet | Ignat, Liviu I. Zuazua, Enrique |
| contents | We establish optimal convergence rates for the continuous piecewise affine finite element approximation of the Sobolev constant in arbitrary dimensions N\geq 2 and for Lebesgue exponents 1<p<N. Our analysis relies on a refined study of the Sobolev deficit in suitable quasi-norms, which have been introduced and utilized in the context of finite element approximations of the p-Laplacian. The proof further involves sharp estimates for the finite element approximation of Sobolev minimizers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_09637 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Optimal convergence rates for the finite element approximation of the Sobolev constant Ignat, Liviu I. Zuazua, Enrique Numerical Analysis Classical Analysis and ODEs We establish optimal convergence rates for the continuous piecewise affine finite element approximation of the Sobolev constant in arbitrary dimensions N\geq 2 and for Lebesgue exponents 1<p<N. Our analysis relies on a refined study of the Sobolev deficit in suitable quasi-norms, which have been introduced and utilized in the context of finite element approximations of the p-Laplacian. The proof further involves sharp estimates for the finite element approximation of Sobolev minimizers. |
| title | Optimal convergence rates for the finite element approximation of the Sobolev constant |
| topic | Numerical Analysis Classical Analysis and ODEs |
| url | https://arxiv.org/abs/2504.09637 |