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Subanalytic version of Whitney's extension theorem

Krzysztof Kurdyka, Wiesław Pawłucki (1997)

Studia Mathematica

For any subanalytic C k -Whitney field (k finite), we construct its subanalytic C k -extension to n . Our method also applies to other o-minimal structures; e.g., to semialgebraic Whitney fields.

Subextension of plurisubharmonic functions without changing the Monge-Ampère measures and applications

Le Mau Hai, Nguyen Xuan Hong (2014)

Annales Polonici Mathematici

The aim of the paper is to investigate subextensions with boundary values of certain plurisubharmonic functions without changing the Monge-Ampère measures. From the results obtained, we deduce that if a given sequence is convergent in C n - 1 -capacity then the sequence of the Monge-Ampère measures of subextensions is weakly*-convergent. As an application, we investigate the Dirichlet problem for a nonnegative measure μ in the class ℱ(Ω,g) without the assumption that μ vanishes on all pluripolar sets.

Subharmonicity properties of the Bergman kernel and some other functions associated to pseudoconvex domains

Bo Berndtsson (2006)

Annales de l’institut Fourier

Let D be a pseudoconvex domain in t k × z n and let φ be a plurisubharmonic function in D . For each t we consider the n -dimensional slice of D , D t = { z ; ( t , z ) D } , let φ t be the restriction of φ to D t and denote by K t ( z , ζ ) the Bergman kernel of D t with the weight function φ t . Generalizing a recent result of Maitani and Yamaguchi (corresponding to n = 1 and φ = 0 ) we prove that log K t ( z , z ) is a plurisubharmonic function in D . We also generalize an earlier results of Yamaguchi concerning the Robin function and discuss similar results in the setting...

Submersions and equivariant Quillen metrics

Xiaonan Ma (2000)

Annales de l'institut Fourier

In this paper, we calculate the behaviour of the equivariant Quillen metric by submersions. We thus extend a formula of Berthomieu-Bismut to the equivariant case.

Sub-Riemannian Metrics: Minimality of Abnormal Geodesics versus Subanalyticity

Andrei A. Agrachev, Andrei V. Sarychev (2010)

ESAIM: Control, Optimisation and Calculus of Variations

We study sub-Riemannian (Carnot-Caratheodory) metrics defined by noninvolutive distributions on real-analytic Riemannian manifolds. We establish a connection between regularity properties of these metrics and the lack of length minimizing abnormal geodesics. Utilizing the results of the previous study of abnormal length minimizers accomplished by the authors in [Annales IHP. Analyse nonlinéaire 13, p. 635-690] we describe in this paper two classes of the germs of distributions (called 2-generating...

Subsets of Hardy-class zero sets in the ball.

Pascal J. Thomas (1990)

Publicacions Matemàtiques

We consider the problem of whether the union of complex hyperplanes can be a subset of a zero variety for the Hardy classes of the ball. A sufficient condition is found, consisting in a strong geometric separatedness requirement, together with a quantitative requirement slightly stronger than the necessary condition for Nevanlinna class zero varieties.

Sul problema pluriarmonico in un campo sferico di 𝐂 n per n 3

Maria Adelaide Sneider (1983)

Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni

Let Σ be the boundary of the unit ball Ω of 𝐂 n . A set of second order linear partial differential operators, tangential to Σ , is explicitly given in such a way that, for n 3 , the corresponding PDE caractherize the trace of the solution of the pluriharmonic problem (either “in the large” or “local”), relative to Ω .

Sul teorema di Cauchy-Morera per le funzioni analitiche di più variabili complesse

Gaetano Fichera (1983)

Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni

A Cauchy-Morera theorem is proved for a function w of n complex variables, assuming only w L l o c 1 . A related result of Bochner, concerning continuous functions, is extended to a larger function class.

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