Levi-flat hypersurfaces with real analytic boundary
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Abstract:
Let $X$ be a Stein manifold of dimension at least 3. Given a compact codimension 2 real analytic submanifold $M$ of $X$, that is the boundary of a compact Levi-flat hypersurface $H$, we study the regularity of $H$. Suppose that the CR singularities of $M$ are an $\mathcal {O}(X)$-convex set. For example, suppose $M$ has only finitely many CR singularities, which is a generic condition. Then $H$ must in fact be a real analytic submanifold. If $M$ is real algebraic, it follows that $H$ is real algebraic and in fact extends past $M$, even near CR singularities. To prove these results we provide two variations on a theorem of Malgrange, that a smooth submanifold contained in a real analytic subvariety of the same dimension is itself real analytic. We prove a similar theorem for submanifolds with boundary, and another one for subanalytic sets.References
- M. Salah Baouendi, Peter Ebenfelt, and Linda Preiss Rothschild, Real submanifolds in complex space and their mappings, Princeton Mathematical Series, vol. 47, Princeton University Press, Princeton, NJ, 1999. MR 1668103, DOI 10.1515/9781400883967
- Eric Bedford, Levi flat hypersurfaces in $\textbf {C}^{2}$ with prescribed boundary: stability, Ann. Scuola Norm. Sup. Pisa Cl. Sci. (4) 9 (1982), no. 4, 529–570. MR 693779
- Eric Bedford and Bernard Gaveau, Envelopes of holomorphy of certain $2$-spheres in $\textbf {C}^{2}$, Amer. J. Math. 105 (1983), no. 4, 975–1009. MR 708370, DOI 10.2307/2374301
- Edward Bierstone and Pierre D. Milman, Semianalytic and subanalytic sets, Inst. Hautes Études Sci. Publ. Math. 67 (1988), 5–42. MR 972342
- Edward Bierstone and Pierre D. Milman, Arc-analytic functions, Invent. Math. 101 (1990), no. 2, 411–424. MR 1062969, DOI 10.1007/BF01231509
- Errett Bishop, Differentiable manifolds in complex Euclidean space, Duke Math. J. 32 (1965), 1–21. MR 200476
- Albert Boggess, CR manifolds and the tangential Cauchy-Riemann complex, Studies in Advanced Mathematics, CRC Press, Boca Raton, FL, 1991. MR 1211412
- John P. D’Angelo, Several complex variables and the geometry of real hypersurfaces, Studies in Advanced Mathematics, CRC Press, Boca Raton, FL, 1993. MR 1224231
- Klas Diederich and John E. Fornaess, Pseudoconvex domains with real-analytic boundary, Ann. of Math. (2) 107 (1978), no. 2, 371–384. MR 477153, DOI 10.2307/1971120
- Pierre Dolbeault, Giuseppe Tomassini, and Dmitri Zaitsev, On boundaries of Levi-flat hypersurfaces in $\Bbb C^n$, C. R. Math. Acad. Sci. Paris 341 (2005), no. 6, 343–348 (English, with English and French summaries). MR 2169149, DOI 10.1016/j.crma.2005.07.012
- Xiao Jun Huang and Steven G. Krantz, On a problem of Moser, Duke Math. J. 78 (1995), no. 1, 213–228. MR 1328757, DOI 10.1215/S0012-7094-95-07809-0
- Hon Fei Lai, Characteristic classes of real manifolds immersed in complex manifolds, Trans. Amer. Math. Soc. 172 (1972), 1–33. MR 314066, DOI 10.1090/S0002-9947-1972-0314066-8
- Jiří Lebl, Nowhere minimal CR submanifolds and Levi-flat hypersurfaces, J. Geom. Anal. 17 (2007), no. 2, 321–341. MR 2320166, DOI 10.1007/BF02930726
- Jiří Lebl, Extension of Levi-flat hypersurfaces past CR boundaries, Indiana Univ. Math. J. 57 (2008), no. 2, 699–716. MR 2414332, DOI 10.1512/iumj.2008.57.3203
- B. Malgrange, Ideals of differentiable functions, Tata Institute of Fundamental Research Studies in Mathematics, vol. 3, Tata Institute of Fundamental Research, Bombay; Oxford University Press, London, 1967. MR 0212575
- Jürgen K. Moser and Sidney M. Webster, Normal forms for real surfaces in $\textbf {C}^{2}$ near complex tangents and hyperbolic surface transformations, Acta Math. 150 (1983), no. 3-4, 255–296. MR 709143, DOI 10.1007/BF02392973
- Hugo Rossi, Holomorphically convex sets in several complex variables, Ann. of Math. (2) 74 (1961), 470–493. MR 133479, DOI 10.2307/1970292
Additional Information
- Jiří Lebl
- Affiliation: Department of Mathematics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
- Address at time of publication: Department of Mathematics, University of California at San Diego, La Jolla, California 92093-0112
- MR Author ID: 813143
- ORCID: 0000-0002-9320-0823
- Email: jlebl@math.uiuc.edu, jlebl@math.ucsd.edu
- Received by editor(s): November 13, 2007
- Received by editor(s) in revised form: July 24, 2008
- Published electronically: July 19, 2010
- © Copyright 2010
American Mathematical Society
The copyright for this article reverts to public domain 28 years after publication. - Journal: Trans. Amer. Math. Soc. 362 (2010), 6367-6380
- MSC (2000): Primary 32V40, 35B65; Secondary 32W20, 32E10, 32D15
- DOI: https://doi.org/10.1090/S0002-9947-2010-04887-1
- MathSciNet review: 2678978