Homogeneous pre-foliations of co-degree one and degree four on the projective plane

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Hauptverfasser: Pracias, Carla, Luza, Maycol Falla
Format: Preprint
Veröffentlicht: 2026
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author Pracias, Carla
Luza, Maycol Falla
author_facet Pracias, Carla
Luza, Maycol Falla
contents We classify, up to projective automorphism, all homogeneous pre-foliations of co-degree one and degree four on the complex projective plane $\Ptwo$ whose Legendre transform defines a flat $4$-web. The classification is organized according to the type of the underlying homogeneous foliation $\Hcal$ of degree~$3$, distinguishing the cases $°(\Tcal_{\Hcal})=2$, $3$, and~$4$. The case $°(\Tcal_{\Hcal})=2$ was treated by Bedrouni, while the cases $°(\Tcal_{\Hcal})=3$ and $°(\Tcal_{\Hcal})=4$ are completed here. The proof combines Bedrouni's curvature-holomorphy criteria with explicit normal forms and symbolic computation; the result yields a finite list of explicit one-forms, parametrised by the ramification data of the Gauss map of~$\Hcal$.
format Preprint
id arxiv_https___arxiv_org_abs_2605_07944
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Homogeneous pre-foliations of co-degree one and degree four on the projective plane
Pracias, Carla
Luza, Maycol Falla
Algebraic Geometry
Complex Variables
Dynamical Systems
We classify, up to projective automorphism, all homogeneous pre-foliations of co-degree one and degree four on the complex projective plane $\Ptwo$ whose Legendre transform defines a flat $4$-web. The classification is organized according to the type of the underlying homogeneous foliation $\Hcal$ of degree~$3$, distinguishing the cases $°(\Tcal_{\Hcal})=2$, $3$, and~$4$. The case $°(\Tcal_{\Hcal})=2$ was treated by Bedrouni, while the cases $°(\Tcal_{\Hcal})=3$ and $°(\Tcal_{\Hcal})=4$ are completed here. The proof combines Bedrouni's curvature-holomorphy criteria with explicit normal forms and symbolic computation; the result yields a finite list of explicit one-forms, parametrised by the ramification data of the Gauss map of~$\Hcal$.
title Homogeneous pre-foliations of co-degree one and degree four on the projective plane
topic Algebraic Geometry
Complex Variables
Dynamical Systems
url https://arxiv.org/abs/2605.07944