456 research outputs found

    On estimates for the βˆ‚Λ‰\displaystyle \bar \partial equation in Stein manifolds

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    We generalize to intersection of strictly cc -convex domains in Stein manifold, Lrβˆ’Ls L^{r}-L^{s} and Lipschitz estimates for the solutions of the βˆ‚Λ‰ \bar \partial equation done by Ma and Vassiliadou for domains in Cn. {\mathbb{C}}^{n}. For this we use a Docquier-Grauert holomorphic retraction plus the raising steps method I introduce earlier. This gives results in the case of domains with low regularity, C3, {\mathcal{C}}^{3}, for their boundary.Comment: I follow the nice suggestions done by the referee which substantially simplify the proof of theorem 4.1. Also typos are corrected and the presenrtation is slightly modifie

    An andreotti-grauert theorem with lrl^r estimates

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    By a theorem of Andreotti and Grauert if Ο‰\omega is a (p,q)(p,q) current, q<n,q < n, in a Stein manifold Ξ©,Β βˆ‚Λ‰\displaystyle \Omega ,\ \bar \partial closed and with compact support, then there is a solution uu to βˆ‚Λ‰u=Ο‰\bar \partial u=\omega still with compact support in Ξ©.\displaystyle \Omega . The main result of this work is to show that if moreover Ο‰βˆˆLr(m),\displaystyle \omega \in L^{r}(m), where mm is a suitable Lebesgue measure on the Stein manifold, then we have a solution uu with compact support {\sl and} in $L^{s}(m),\ \frac{1}{s}=\frac{1}{r}-\frac{1}{2(n+1)}.Weproveitbyestimatesin We prove it by estimates in L^{r}$ spaces with weights.Comment: Thanks to the referee, the presentation is highly enhanced and some typos are fixed. This will appear in:Annali de la Scuola Norm. Sup. di Pis
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