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On positivity of certain systems of partial differential equations
We extend the Fefferman–Phong inequality to N × N systems of PDEs with symbol [Image: see text] (x, ξ) ∈ ℝ(n) × ℝ(n), where e is a positive homogeneous quadratic form, and B(x, ξ) = Σ(ℓ=1)(n) B(ℓ)(x)ξ(ℓ). We thus generalize a result by L.-Y. Sung that was obtained for systems of ordinary differentia...
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| Format: | Artigo |
| Język: | Inglês |
| Wydane: |
National Academy of Sciences
2007
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| Hasła przedmiotowe: | |
| Dostęp online: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1783381/ https://ncbi.nlm.nih.gov/pubmed/17213315 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1073/pnas.0609949104 |
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