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Symplectic geometry and positivity of pseudo-differential operators
In this paper we establish positivity for pseudo-differential operators under a condition that is essentially also necessary. The proof is based on a microlocalization procedure and a geometric lemma.
Salvato in:
| Pubblicato in: | Proc Natl Acad Sci U S A |
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| Autori principali: | , |
| Natura: | Artigo |
| Lingua: | Inglês |
| Pubblicazione: |
National Academy of Sciences
1982
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| Soggetti: | |
| Accesso online: | https://ncbi.nlm.nih.govhttps://pmc.ncbi.nlm.nih.gov/articles/PMC345817/ https://ncbi.nlm.nih.govhttps://pubmed.ncbi.nlm.nih.gov/16593153/ https://ncbi.nlm.nih.govhttps://doi.org/10.1073/pnas.79.2.710 |
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