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Related papers: The Levi Problem in $\mathbb C^n$: A Survey

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We study on the biholomorphic equivalence of a strongly pseudoconvex bounded domain with differentiable spherical boundary to an open ball, and we study on the biholomorphicity of a proper holomorphic self mapping of a strongly pseudoconvex…

Complex Variables · Mathematics 2007-05-23 Won K. Park

A previous knowledge of the domains of dependence of an Hamilton Jacobi equation can be useful in its study and approximation. Information of this nature are, in general, difficult to obtain directly from the data of the problem. In this…

Numerical Analysis · Mathematics 2014-11-11 Adriano Festa

We construct normal forms for Levi degenerate hypersurfaces of finite type in $\mathbb C^2$. As one consequence, an explicit solution to the problem of local biholomorphic equivalence is obtained. Another consequence determines the…

Complex Variables · Mathematics 2007-05-23 Martin Kolar

We address the problem of existence and uniqueness of a Levi-flat hypersurface $M$ in $C^n$ with prescribed compact boundary $S$ for $n\ge3$. The situation for $n\ge3$ differs sharply from the well studied case $n=2$. We first establish…

Complex Variables · Mathematics 2015-02-16 Pierre Dolbeault , Giuseppe Tomassini , Dmitri Zaitsev

In this paper we studied a broader type of generalized balls which are domains on the complex projective with possibly Levi-degenerate boundaries. We proved rigidity theorems for proper holomorphic mappings among them by exploring the…

Complex Variables · Mathematics 2021-04-14 Sui-Chung Ng , Yuehuan Zhu

Comparison and localization results for the Lempert function, the Carath\'eodory distance and their infinitesimal forms on strongly pseudoconvex domains are obtained. Related results for visible and strongly complete domains are proved.

Complex Variables · Mathematics 2023-11-28 Nikolai Nikolov

The main result of [HL] (Annals of Math. 102 (1975), 223--290) gives a characterization of the boundaries of complex subvarieties in C^n. An application of this result concerning pseudoconvexity, namely Theorem 10.4 in [HL], is amplified.

Complex Variables · Mathematics 2012-08-27 F. Reese Harvey , H. Blaine Lawson,

Let $H \subset {\mathbb P}^n$ be a real-analytic subvariety of codimension one induced by a real-analytic curve in the Grassmannian $G(n+1,n)$. Assuming $H$ has a global defining function, we prove $H$ is Levi-flat, the closure of its…

Complex Variables · Mathematics 2015-05-14 Jiri Lebl

We discuss various analytical and geometrical aspects of the Levi form, which is associated with a CR manifold having any CR dimension and any CR codimension.

Complex Variables · Mathematics 2020-04-29 Judith Brinkschulte , C. Denson Hill , Jürgen Leiterer , Mauro Nacinovich

We introduce a new geometrical invariant of CR manifolds of hypersurface type, which we dub the "Levi core" of the manifold. When the manifold is the boundary of a smooth bounded pseudoconvex domain, we show how the Levi core is related to…

Complex Variables · Mathematics 2021-09-13 Gian Maria Dall'Ara , Samuele Mongodi

In the optimization of convex domains under a PDE constraint numerical difficulties arise in the approximation of convex domains in $\mathbb{R}^3$. Previous research used a restriction to rotationally symmetric domains to reduce shape…

Numerical Analysis · Mathematics 2023-11-23 Sören Bartels , Hedwig Keller , Gerd Wachsmuth

In this paper, we use the canonical connection instead of Levi-Civita connection to study the smooth maps between almost Hermitian manifolds, especially, the pseudoholomorphic ones. By using the Bochner formulas, we obtian the…

Differential Geometry · Mathematics 2021-05-21 Chiakuei Peng , Xiaowei Xu

We discuss the well-known open problems: the local Steiness problem and the union problem.

Complex Variables · Mathematics 2009-05-15 Mihnea Coltoiu

We study the semicontinuity of automorphism groups for perturbations of domains in complex space or in complex manifolds. We provide a new approach to the study of such results for domains having minimal boundary smoothness. The emphasis in…

Complex Variables · Mathematics 2011-09-15 Robert E. Greene , Kang-Tae Kim , Steven G. Krantz , AeRyeong Seo

We study the corona problem on the unit ball in $\CC^n$, and more generally on strongly pseudoconvex domains in $\CC^n$. When the corona problem has just two pieces of data, and an extra geometric hypothesis is satisfied, then we are able…

Complex Variables · Mathematics 2010-01-13 Steven G. Krantz

In this paper we consider germs of smooth Levi flat hypersurfaces, under the following notion of local equivalence: S_1 ~ S_2 if their one-sided neighborhoods admit a biholomorphism smooth up to the boundary. We introduce a simple invariant…

Complex Variables · Mathematics 2010-03-09 Giuseppe Della Sala

We review classical methods to solve the Levi problem in the presence of symmetries, established by Hirschowitz and by Grauert-Remmert-Ueda. We then illustrate these methods by solving the Levi problem in some new situations, namely…

Complex Variables · Mathematics 2026-03-10 S. Ivashkovych , C. Miebach , V. Shevchishin

This survey is devoted to discussing the problems of the unique determination of surfaces that are the boundaries of (generally speaking) nonconvex domains. First (in Sec. 2) we examine some results on the problem of the unique…

Metric Geometry · Mathematics 2016-12-13 Anatoly P. Kopylov

We find the precise growth of some invariant metrics near a point on the boundary of a domain where the Levi form has at least one negative eigenvalue. We also introduce a new invariant pseudometric which is convenient in this context, and…

Complex Variables · Mathematics 2014-05-23 Nguyen Quang Dieu , Nikolai Nikolov , Pascal J. Thomas

Based on the results in [Rei14a] we deduce some topological results concerning holomorphic mappings of Levi-nondegenerate hyperquadrics under biholomorphic equivalence. We study the class $\mathcal F$ of so-called nondegenerate and…

Complex Variables · Mathematics 2021-06-15 Michael Reiter