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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2209.10794 |
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| _version_ | 1866912454651412480 |
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| author | Debrouwere, Andreas Kalmes, Thomas |
| author_facet | Debrouwere, Andreas Kalmes, Thomas |
| contents | We prove quantitative Runge type approximation results for spaces of smooth zero solutions of several classes of linear partial differential operators with constant coefficients. Among others, we establish such results for arbitrary operators on convex sets, elliptic operators, parabolic operators, and the wave operator in one spatial variable. Our methods are inspired by the study of linear topological invariants for kernels of partial differential operators. As a part of our work, we also show a qualitative Runge type approximation theorem for subspace elliptic operators, which seems to be new and of independent interest. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2209_10794 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Quantitative Runge type approximation theorems for zero solutions of certain partial differential operators Debrouwere, Andreas Kalmes, Thomas Analysis of PDEs Functional Analysis 35A35, 35E20, 46A63 We prove quantitative Runge type approximation results for spaces of smooth zero solutions of several classes of linear partial differential operators with constant coefficients. Among others, we establish such results for arbitrary operators on convex sets, elliptic operators, parabolic operators, and the wave operator in one spatial variable. Our methods are inspired by the study of linear topological invariants for kernels of partial differential operators. As a part of our work, we also show a qualitative Runge type approximation theorem for subspace elliptic operators, which seems to be new and of independent interest. |
| title | Quantitative Runge type approximation theorems for zero solutions of certain partial differential operators |
| topic | Analysis of PDEs Functional Analysis 35A35, 35E20, 46A63 |
| url | https://arxiv.org/abs/2209.10794 |