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One can associate several residue-type indices to a singular point of a two-dimensional holomorphic vector field. Some of these indices depend also on the choice of a separatrix at the singular point. We establish some relations between them, especially when the singular point is a generalized curve and the separatrix is the maximal one. These local results have global consequences, for example concerning the construction of logarithmic forms defining a given holomorphic foliation.
Brunella, Marco. "Some remarks on indices of holomorphic vector fields.." Publicacions Matemàtiques 41.2 (1997): 527-544. <http://eudml.org/doc/41306>.
@article{Brunella1997, abstract = {One can associate several residue-type indices to a singular point of a two-dimensional holomorphic vector field. Some of these indices depend also on the choice of a separatrix at the singular point. We establish some relations between them, especially when the singular point is a generalized curve and the separatrix is the maximal one. These local results have global consequences, for example concerning the construction of logarithmic forms defining a given holomorphic foliation.}, author = {Brunella, Marco}, journal = {Publicacions Matemàtiques}, keywords = {Campos vectoriales; Funciones holomorfas; Puntos singulares; holomorphic vector field; isolated singularity; Baum-Bott index; intersection index; Poincaré-Hopf index}, language = {eng}, number = {2}, pages = {527-544}, title = {Some remarks on indices of holomorphic vector fields.}, url = {http://eudml.org/doc/41306}, volume = {41}, year = {1997}, }
TY - JOUR AU - Brunella, Marco TI - Some remarks on indices of holomorphic vector fields. JO - Publicacions Matemàtiques PY - 1997 VL - 41 IS - 2 SP - 527 EP - 544 AB - One can associate several residue-type indices to a singular point of a two-dimensional holomorphic vector field. Some of these indices depend also on the choice of a separatrix at the singular point. We establish some relations between them, especially when the singular point is a generalized curve and the separatrix is the maximal one. These local results have global consequences, for example concerning the construction of logarithmic forms defining a given holomorphic foliation. LA - eng KW - Campos vectoriales; Funciones holomorfas; Puntos singulares; holomorphic vector field; isolated singularity; Baum-Bott index; intersection index; Poincaré-Hopf index UR - http://eudml.org/doc/41306 ER -