Daniel Posada-Buriticá

arXiv2026

Effective Results for Foliations on Smooth Projective Complete Intersection Surfaces

We study holomorphic foliations on projective spaces that leave smooth projective complete intersection surfaces $M$ invariant. We determine precisely for which degrees such foliations on $M$ exist. As a consequence, we obtain new bounds for the classical Poincaré problem for smooth projective complete intersection surfaces and prove that previously known bounds for smooth hypersurfaces in $\mathbb{P}^3$ are optimal. Furthermore, for a foliation $[s]$ on $M$ with isolated singularities and for degrees beyond an explicit bound that we provide, we show that a section $s'$ has singular scheme containing that of $s$ if and only if $s'=ϕ(s)$ for some global endomorphism $ϕ$ of the tangent bundle of $M$.

math.AG↗

arXiv2025

Foliations on Projective Complete Intersection K3 Surfaces

We study foliations $\mathscr{F}$ on projective complete intersection K3 surfaces $X \hookrightarrow \mathbb{P}^n$, where $\mathscr{F}$ has isolated singularities and it is the restriction of a foliation of degree $d$ on $\mathbb{P}^n$ that leaves $X$ invariant. We compute the values of the degrees $d$ for which $\mathscr{F}$ is uniquely determined by its singular scheme.

math.AG↗