On prouve que, en toute dimension, tout germe de champs de vecteurs holomorphe singulier non-dégénéré sur une variété est univalent au sens de Palais (semicomplet au sens de Rebelo) : en restriction à un voisinage convenable du point singulier, ses solutions n’ont pas de multivaluation. Ceci implique que, à la différence du cas dégénéré, un germe de champ de vecteurs holomorphe non-dégénéré est le modèle local d’un champ de vecteurs holomorphe complet sur une variété complexe (pas nécessairement séparée).
We prove that, in all dimensions, germs of nondegenerate holomorphic vector fields on complex manifolds are univalent in the sense of Palais (semicomplete in the sense of Rebelo), this is, that there exist neighborhoods of their singular points where all their solutions are single-valued. This implies that, in stark contrast with the degenerate case, all germs of nondegenerate holomorphic vector fields give local models for complete holomorphic vector fields on complex manifolds (albeit possibly non-Hausdorff ones).
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@article{CRMATH_2020__358_7_877_0, author = {Guillot, Adolfo}, title = {On the local univalence of nondegenerate holomorphic vector fields}, journal = {Comptes Rendus. Math\'ematique}, pages = {877--880}, publisher = {Acad\'emie des sciences, Paris}, volume = {358}, number = {7}, year = {2020}, doi = {10.5802/crmath.100}, language = {en}, url = {http://www.numdam.org/articles/10.5802/crmath.100/} }
TY - JOUR AU - Guillot, Adolfo TI - On the local univalence of nondegenerate holomorphic vector fields JO - Comptes Rendus. Mathématique PY - 2020 SP - 877 EP - 880 VL - 358 IS - 7 PB - Académie des sciences, Paris UR - http://www.numdam.org/articles/10.5802/crmath.100/ DO - 10.5802/crmath.100 LA - en ID - CRMATH_2020__358_7_877_0 ER -
%0 Journal Article %A Guillot, Adolfo %T On the local univalence of nondegenerate holomorphic vector fields %J Comptes Rendus. Mathématique %D 2020 %P 877-880 %V 358 %N 7 %I Académie des sciences, Paris %U http://www.numdam.org/articles/10.5802/crmath.100/ %R 10.5802/crmath.100 %G en %F CRMATH_2020__358_7_877_0
Guillot, Adolfo. On the local univalence of nondegenerate holomorphic vector fields. Comptes Rendus. Mathématique, Tome 358 (2020) no. 7, pp. 877-880. doi : 10.5802/crmath.100. http://www.numdam.org/articles/10.5802/crmath.100/
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