Abstract
Given a pseudoconvex domain U with \(\mathscr {C}^1\)-boundary in \({\mathbb {P}}^n,\) \(n\geqslant 3,\) we show that if \(H^{2n-2}_{\mathrm{dR}}(U)\,\,\ne \,0,\) then there is a strictly psh function in a neighborhood of \(\partial U.\) We also solve the \({{{\overline{\partial }}}}\)-equation in \(X={\mathbb {P}}^n\setminus U,\) for data in \(\mathscr {C}^\infty _{(0,1)}(X).\) We discuss Levi-flat domains in surfaces. If Z is a real algebraic hypersurface in \({\mathbb {P}}^2,\) (resp a real-analytic hypersurface with a point of strict pseudoconvexity), then there is a strictly psh function in a neighborhood of Z.
Similar content being viewed by others
References
Andreotti, A., Grauert, H.: Théorème de finitude pour la cohomologie des espaces complexes. (French). Bull. Soc. Math. France 90, 193–259 (1962)
Berndtsson, B., Sibony, N.: The \({\overline{\partial }}\)-equation on a positive current. Invent. math. 147(2), 371–428 (2002)
Demailly, J.-P.: Complex Analytic and Algebraic Geometry, www-fourier.ujf-grenoble.fr/demailly
Dinh,T.-C., Nguyen, V.-A., Sibony, N.: Unique Ergodicity for foliations on compact Kähler surfaces. arXiv:1811.07450 math.CV (math.DS), 50 pages (2018)
Dinh, T.-C., Sibony, N.: Pull-back currents by holomorphic maps. Manuscr. Math. 123(3), 357–371 (2007)
Dinh, T.-C., Sibony, N.: Rigidity of Julia sets for Hénon type maps. J. Mod. Dyn. 8(3–4), 499–548 (2014)
Dinh, T.-C., Sibony, N.: Some open problems on holomorphic foliation theory. Acta Mathematica Vietnamica 45(1), 103–112 (2020)
Elencwajg, G.: Pseudo-convexité locale dans les variété kählériennes. Ann. Inst. Fourier (Grenoble)25, no. 2, xv, 295-314 (1975)
Fornæss, J.E., Sibony, N.: Oka’s inequality for currents and applications. Math. Ann. 301(3), 399–419 (1995)
Fornaess, J.E., Sibony, N.: Harmonic currents of finite energy and laminations. Geom. Funct. Anal. 15(5), 962–1003 (2005)
Fornaess, J.E., Sibony, N.: Riemann surface laminations with singularities. J. Geom. Anal. 18(2), 400–442 (2008)
Greene, R.E., Wu, H.: On Kähler manifolds of positive bisectional curvature and a theorem of Hartogs. Abh. Math. Sem. Univ. Hamburg 47, 171–185 (1978)
Hörmander, L.: An introduction to complex analysis in several variables. Third edition. North-Holland Mathematical Library, 7. North-Holland Publishing Co., Amsterdam, (1990). xii+254 pp
Kohn, J.J.: Global regularity for \({\overline{\partial }}\) on weakly pseudo-convex manifolds. Trans. Am. Math. Soc. 181, 273–292 (1973)
Malgrange, B.: Ideals of differentiable functions. Tata Institute of Fundamental Research Studies in Mathematics, No. 3 Tata Institute of Fundamental Research, Bombay; Oxford University Press, London (1967) vii+106 pp
Ohsawa, T., Sibony, N.: Bounded p.s.h. functions and pseudoconvexity in Kähler manifold. Nagoya Math. J.149, 1-8 (1998)
Sibony, N.: Pfaff systems, currents and hulls. Math. Z. 285(3–4), 1107–1123 (2017)
Sibony, N.: Levi problem in complex manifolds. Math. Ann. 371(3–4), 1047–1067 (2018)
Siu, Y.-T.: Nonexistence of smooth Levi-flat hypersurfaces in complex projective spaces of dimension \(\ge 3.\)Ann. of Math. (2)151, no. 3, 1217-1243 (2000)
Slodkowski, Z.: Local maximum property and q-plurisubharmonic functions in uniform algebras. J. Math. Anal. Appl. 115, no. 1, 105?130 (1986)
Sullivan, D.: Cycles for the dynamical study of foliated manifolds in complex manifolds. Invent. Math. 36, 225–255 (1975)
Takeuchi, A.: Domaines pseudoconvexes infinis et la métrique riemannienne dans un espace projectif. J. Math. Soc. Jpn. 16, 159–181 (1964)
Acknowledgements
It is a pleasure to thank Bo Berndtsson and Tien-Cuong Dinh for their insightful comments and the referee for his questions.
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Sibony, N. Pseudoconvex domains with smooth boundary in projective spaces. Math. Z. 298, 625–637 (2021). https://doi.org/10.1007/s00209-020-02613-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00209-020-02613-6
Keywords
- Levi-flat
- \({{{\overline{\partial }}}}\)-Equation
- Pseudo-concave sets
- Strictly plurisubharmonic functions