Extensions of the Lax-Milgram theorem to Hilbert C*-modules
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2019
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| _version_ | 1866910919441776640 |
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| author | Eskandari, R. Frank, M. Manuilov, V. M. Moslehian, M. S. |
| author_facet | Eskandari, R. Frank, M. Manuilov, V. M. Moslehian, M. S. |
| contents | We present three versions of the Lax-Milgram theorem in the framework of Hilbert C*-modules, two for those over W*-algebras and one for those over C*-algebras of compact operators. It is remarkable that while the Riesz theorem is not valid for certain Hilbert C*-modules over C*-algebras of compact operators, our Lax-Milgram theorem turns out to be valid for all of them. We also give several examples to illustrate our results, in particular, we show that the main theorem is not true for Hilbert modules over arbitrary C*-algebras. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1905_00077 |
| institution | arXiv |
| publishDate | 2019 |
| record_format | arxiv |
| spellingShingle | Extensions of the Lax-Milgram theorem to Hilbert C*-modules Eskandari, R. Frank, M. Manuilov, V. M. Moslehian, M. S. Operator Algebras Functional Analysis We present three versions of the Lax-Milgram theorem in the framework of Hilbert C*-modules, two for those over W*-algebras and one for those over C*-algebras of compact operators. It is remarkable that while the Riesz theorem is not valid for certain Hilbert C*-modules over C*-algebras of compact operators, our Lax-Milgram theorem turns out to be valid for all of them. We also give several examples to illustrate our results, in particular, we show that the main theorem is not true for Hilbert modules over arbitrary C*-algebras. |
| title | Extensions of the Lax-Milgram theorem to Hilbert C*-modules |
| topic | Operator Algebras Functional Analysis |
| url | https://arxiv.org/abs/1905.00077 |