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On the partial algebraicity of holomorphic mappings between two real algebraic sets

Joël Merker (2001)

Bulletin de la Société Mathématique de France

The rigidity properties of the local invariants of real algebraic Cauchy-Riemann structures imposes upon holomorphic mappings some global rational properties (Poincaré 1907) or more generally algebraic ones (Webster 1977). Our principal goal will be to unify the classical or recent results in the subject, building on a study of the transcendence degree, to discuss also the usual assumption of minimality in the sense of Tumanov, in arbitrary dimension, without rank assumption and for holomorphic...

On the smoothness of Levi-foliations.

D. E. Barrett, John Erik Fornaess (1988)

Publicacions Matemàtiques

We study the regularity of the induced foliation of a Levi-flat hypersurface in Cn, showing that the foliation is as many times continuously differentiable as the hypersurface itself. The key step in the proof given here is the construction of a certain family of approximate plurisubharmonic defining functions for the hypersurface in question.

Partial indices of analytic discs attached to lagrangian submanifolds of N

Josip Globevnik (1996)

Annales de l'institut Fourier

Integers κ 1 , ... , κ N are the partial indices of an analytic disc attached to a maximally real submanifolds of N if and only if κ j 2 for at least one j . If this is the case there are a Lagrangian submanifold M of N and an analytic disc attached to M with partial indices κ 1 , ... , κ N .

Polydisc slicing in n

Krzysztof Oleszkiewicz, Aleksander Pełczyński (2000)

Studia Mathematica

Let D be the unit disc in the complex plane ℂ. Then for every complex linear subspace H in n of codimension 1, v o l 2 n - 2 ( D n - 1 ) v o l 2 n - 2 ( H D n ) 2 v o l 2 n - 2 ( D n - 1 ) . The lower bound is attained if and only if H is orthogonal to the versor e j of the jth coordinate axis for some j = 1,...,n; the upper bound is attained if and only if H is orthogonal to a vector e j + σ e k for some 1 ≤ j < k ≤ n and some σ ∈ ℂ with |σ| = 1. We identify n with 2 n ; by v o l k ( · ) we denote the usual k-dimensional volume in 2 n . The result is a complex counterpart of Ball’s [B1] result for...

Problème de Plateau complexe dans les variétés kählériennes

Frédéric Sarkis (2002)

Bulletin de la Société Mathématique de France

L’étude du « problème de Plateau complexe » (ou « problème du bord ») dans une variété complexe X consiste à caractériser les sous-variétés réelles  Γ de X qui sont le bord de sous-ensembles analytiques de X Γ . Notre principal résultat traite le cas X = U × ω U est une variété complexe connexe et ω est une variété kählérienne disque convexe. Comme conséquence, nous obtenons des résultats de Harvey-Lawson [19], Dolbeault-Henkin [12] et Dinh [10]. Nous obtenons aussi une généralisation des théorèmes de Hartogs-Levi...

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