Dans cet article, nous associons les techniques du principe de réflexion de Lewy-Pinchuk avec celles du principe de continuité de Behnke-Sommer. Après avoir prolongé holomorphiquement une fonction dite “de réflexion” à une congruence de sous-variétés de Segre, nous sommes conduits à l’étude de l’enveloppe d’holomorphie d’un domaine recouvert d’un “chapeau” Levi-plat lisse. D’après notre résultat principal, tout CR-difféomorphisme de classe entre deux hypersurfaces analytiques réelles globalement minimales de () est analytique réel en tout point de si est holomorphiquement non-dégénérée. Plus généralement, nous établissons que la fonction de réflexion associée à un tel difféomorphisme CR de classe entre deux hypersurfaces analytiques réelles globalement minimales se prolonge toujours holomorphiquement à un voisinage du graphe de dans , sans aucune condition de non-dégénérescence sur . Cet énoncé fournit une nouvelle version du principe de réflexion de Schwarz en plusieurs variables complexes. Enfin, nous démontrons que toute application de classe et CR entre deux hypersurfaces analytiques réelles ne contenant pas de courbes holomorphes est analytique réelle en tout point de , sans aucune condition de rang sur .
In the present paper, we associate the techniques of the Lewy-Pinchuk reflection principle with the Behnke-Sommer continuity principle. Extending a so-called reflection function to a parameterized congruence of Segre varieties, we are led to studying the envelope of holomorphy of a certain domain covered by a smooth Levi-flat “hat”. In our main theorem, we show that every -smooth CR diffeomorphism between two globally minimal real analytic hypersurfaces in () is real analytic at every point of if is holomorphically nondegenerate. More generally, we establish that the reflection function associated to such a -smooth CR diffeomorphism between two globally minimal hypersurfaces in () always extends holomorphically to a neighborhood of the graph of in , without any nondegeneracy condition on . This gives a new version of the Schwarz symmetry principle to several complex variables. Finally, we show that every - smooth CR mapping between two real analytic hypersurfaces containing no complex curves is real analytic at every point of , without any rank condition on .
Keywords: reflection principle, continuity principle, CR diffeomorphism, holomorphic nondegeneracy, global minimality in the sense of Trépreau-Tumanov, reflection function, envelopes of holomorphy
Mot clés : principe de réflexion, principe de continuité, difféomorphisme CR, non dégénérescence holomorphe, minimalité globale au sens de Trépreau-Tumanov, fonction de réflexion, enveloppes d'holomorphie
@article{AIF_2002__52_5_1443_0, author = {Merker, Jo\"el}, title = {On envelopes of holomorphy of domains covered by {Levi-flat} hats and the reflection principle}, journal = {Annales de l'Institut Fourier}, pages = {1443--1523}, publisher = {Association des Annales de l{\textquoteright}institut Fourier}, volume = {52}, number = {5}, year = {2002}, doi = {10.5802/aif.1922}, mrnumber = {1935554}, zbl = {1031.32028}, language = {en}, url = {http://www.numdam.org/articles/10.5802/aif.1922/} }
TY - JOUR AU - Merker, Joël TI - On envelopes of holomorphy of domains covered by Levi-flat hats and the reflection principle JO - Annales de l'Institut Fourier PY - 2002 SP - 1443 EP - 1523 VL - 52 IS - 5 PB - Association des Annales de l’institut Fourier UR - http://www.numdam.org/articles/10.5802/aif.1922/ DO - 10.5802/aif.1922 LA - en ID - AIF_2002__52_5_1443_0 ER -
%0 Journal Article %A Merker, Joël %T On envelopes of holomorphy of domains covered by Levi-flat hats and the reflection principle %J Annales de l'Institut Fourier %D 2002 %P 1443-1523 %V 52 %N 5 %I Association des Annales de l’institut Fourier %U http://www.numdam.org/articles/10.5802/aif.1922/ %R 10.5802/aif.1922 %G en %F AIF_2002__52_5_1443_0
Merker, Joël. On envelopes of holomorphy of domains covered by Levi-flat hats and the reflection principle. Annales de l'Institut Fourier, Tome 52 (2002) no. 5, pp. 1443-1523. doi : 10.5802/aif.1922. http://www.numdam.org/articles/10.5802/aif.1922/
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