Null controllability of n-dimensional parabolic equations degenerated on partial boundary
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866929331990691840 |
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| author | Wu, Weijia Hu, Yaozhong Sun, Hongli Yang, Donghui |
| author_facet | Wu, Weijia Hu, Yaozhong Sun, Hongli Yang, Donghui |
| contents | This paper extends the Carleman estimates to high dimensional parabolic equations with highly degenerate symmetric coefficients on a bounded domain of Lipschitz boundary and use these estimates to study the controlla?bility the corresponding equations. Due to the nonsmoothness and degeneracy of boundary, the partial integration by parts in Carleman estimates have no meaning on the degenerate and nonsmooth parts of the boundary. To get around of this difficulty, we construct special weight function, and transform some integral terms in degenerate regions into a non-degenerate ones carefully so that the obtained Carleman estimates can still be used to the controllability problem. Our results includes some well-known works as some special cases as well as some interesting new examples. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_00287 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Null controllability of n-dimensional parabolic equations degenerated on partial boundary Wu, Weijia Hu, Yaozhong Sun, Hongli Yang, Donghui Analysis of PDEs Optimization and Control This paper extends the Carleman estimates to high dimensional parabolic equations with highly degenerate symmetric coefficients on a bounded domain of Lipschitz boundary and use these estimates to study the controlla?bility the corresponding equations. Due to the nonsmoothness and degeneracy of boundary, the partial integration by parts in Carleman estimates have no meaning on the degenerate and nonsmooth parts of the boundary. To get around of this difficulty, we construct special weight function, and transform some integral terms in degenerate regions into a non-degenerate ones carefully so that the obtained Carleman estimates can still be used to the controllability problem. Our results includes some well-known works as some special cases as well as some interesting new examples. |
| title | Null controllability of n-dimensional parabolic equations degenerated on partial boundary |
| topic | Analysis of PDEs Optimization and Control |
| url | https://arxiv.org/abs/2307.00287 |