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Let $\mathcal{F}$ be a singular codimension one holomorphic foliation on a compact complex manifold $X$ of dimension at least three such that its singular set has codimension at least two. In this paper, we determine Lehmann-Suwa residues…

Complex Variables · Mathematics 2019-10-15 Arturo Fernández-Pérez , Jimmy Támara

We establish the functoriality of Baum--Bott residues under certain conditions. As an application, we show that if $\mathcal{F}$ is a holomorphic foliation, of dimension $k\leq n/2$, on a (possibly non-compact) complex manifold $X$ of…

Complex Variables · Mathematics 2025-11-25 Maurício Corrêa , Tatsuo Suwa

Let $\mathscr{F}$ be a holomorphic foliation of rank $\kappa$ on a complex manifold $M$ of dimension $n$, let $Z$ be a compact connected component of the singular set of $\mathscr{F}$, and let $\Phi \in \mathbb C[z_1,\ldots,z_n]$ be a…

Complex Variables · Mathematics 2024-03-12 Lucas Kaufmann , Richard Lärkäng , Elizabeth Wulcan

We investigate residue-type indices for germs of holomorphic foliations in the plane and characterize second type foliations - those not containing tangent saddle-nodes in the reduction of singularities - by an expression involving the…

Dynamical Systems · Mathematics 2017-03-06 Arturo Fernández-Pérez , Rogério Mol

We prove a Baum--Bott type residual formula for one-dimensional holomorphic foliations, and logarithmic along free divisors. More precisely, this provides a Baum--Bott theorem for a foliated triple $(X, \mathcal{F}, D)$, where $\mathcal{F}$…

Algebraic Geometry · Mathematics 2026-02-03 Maurício Corrêa , Fernando Lourenço , Diogo Machado

We prove that Baum-Bott residues vary continuously under smooth deformations of holomorphic foliations. This provides an effective way to compute residues.

Complex Variables · Mathematics 2010-06-21 Filippo Bracci , Tatsuo Suwa

We consider singular foliations whose holonomy groupoid may be nicely decomposed using Lie groupoids (of unequal dimension). We show that the Baum-Connes conjecture can be formulated in this setting. This conjecture is shown to hold under…

K-Theory and Homology · Mathematics 2020-01-15 Iakovos Androulidakis , Georges Skandalis

Given a compact complex manifold $X$, we prove a Baum-Bott type formula for one-dimensional holomorphic foliations on $X$ that are logarithmic along a hypersurface with isolated singularities. We show that the residues of these foliations…

Algebraic Geometry · Mathematics 2025-03-26 Diogo Da Silva Machado

Let $\mathcal{F}$ be a singular holomorphic foliation of dimension $k>1$ on a projective $n$-manifold $X$. Assume that the determinant of the normal sheaf of $\mathcal{F}$ is ample (as is always the case when $X=\mathbb{P}^{n}$), and that…

Algebraic Geometry · Mathematics 2026-03-16 Omegar Calvo-Andrade , Maurício Corrêa , Marcos Jardim , José Seade

In this work we prove a residue formula for Morita-Futaki-Bott invariant with respect any holomorphic vector fields with isolated (possibly degenerated) singularities in terms of Grothendieck's residues.

Algebraic Geometry · Mathematics 2018-10-15 Maurício Corrêa , A. M. Rodriguez

We aim to classify codimension 1 foliations $\mathscr{F}$ with canonical singularities and $\nu(K_{\mathscr{F}}) < 3$ on threefolds of general type. We prove a classification result for foliations satisfying these conditions and having…

Algebraic Geometry · Mathematics 2023-03-22 Aleksei Golota

In this work we prove a Baum-Bott type residue theorem for flags of holomorphic foliations. We prove some relations between the residues of the flag and the residues of their correspondent foliations. We define the Nash residue for flags…

Algebraic Geometry · Mathematics 2018-10-15 Jean-Paul Brasselet , Maurício Corrêa , Fernando Lourenço

We introduce excess logarithmic residues for one-dimensional holomorphic foliations tangent to a divisor. They arise from the comparison between the logarithmic normal sheaf and the ordinary normal sheaf of the foliation, and measure the…

Algebraic Geometry · Mathematics 2026-04-29 Alana Cavalcante , Maurício Corrêa , Fernando Lourenço , Elaheh Shahsavaripour

In this work we extend the residue theory from flag of holomorphic foliations to flag of holomorphic distributions and we provide an effective way to calculate this class in certain cases. As a consequence, we show that if we consider a…

Algebraic Geometry · Mathematics 2023-11-21 Antonio Marcos Ferreira Da Silva , Fernando Lourenço

We introduce and classify singular foliations of $b^{k+1}$-type, which formalize the properties of vector fields that are tangent to a submanifold $W \subset M$ to order $k$. When $W$ is a hypersurface, these structures are Lie algebroids…

Differential Geometry · Mathematics 2025-08-29 Francis Bischoff , Álvaro del Pino , Aldo Witte

In this work we prove a Baum-Bott type formula for non-compact complex manifold of the form $\tilde{X}=X- \mathcal{D}$, where $X$ is a complex compact manifold and $\mathcal{D}$ is a normal crossing divisor on $X$. As applications, we…

Algebraic Geometry · Mathematics 2021-01-18 Maurício Corrêa , Diogo da Silva Machado

We study codimension one foliations with singularities defined locally by Bott-Morse functions on closed oriented manifolds. We carry to this setting the classical concepts of holonomy of invariant sets and stability, and prove a stability…

Geometric Topology · Mathematics 2015-03-13 Jose Seade , Bruno Scardua

We study holomorphic foliations of codimension $k\geq 1$ on a complex manifold $X$ of dimension $n+k$ from the point of view of the exceptional minimal set conjecture. For $n\geq 2$ we show in particular that if the holomorphic normal…

Complex Variables · Mathematics 2021-07-07 Judith Brinkschulte

The number of singularities, counted with multiplicity, of a generic codimension one holomorphic distribution on a compact toric orbifold is determined. As a consequence, we give the classification of regular distributions on rational…

Complex Variables · Mathematics 2024-02-28 Miguel Rodríguez Peña

This is a survey paper dealing with holomorphic foliations, with emphasis on residue theory and its applications. We start recalling the definition of holomorphic foliations as a subsheaf of the tangent sheaf of a manifold. The theory of…

Algebraic Geometry · Mathematics 2023-02-09 Fernando Lourenço , Fernando Reis
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