Sums of squares III: hypoellipticity in the infinitely degenerate regime
| Autor: | Korobenko, Lyudmila, Sawyer, Eric T. |
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| Rok vydání: | 2021 |
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| Druh dokumentu: | Working Paper |
| Popis: | This is the third in a series of papers dealing with sums of squares and hypoellipticity in the infinitely degenerate regime. We establish a C^2,delta generalization of M. Christ's sum of squares theorem, and use a bootstrap argument with the sum of squares theorem for matrix functions in the second paper of this series, in order to prove a hypoellipticity theorem generalizing work in the infinitely degenerate regime to include nondiagonal operators and more general degeneracies. Comment: 29 pages, typo in the statement of the main theorem corrected, introduction clarified |
| Databáze: | arXiv |
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