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Related papers: Logarithmic Models for Non-Dicritical Foliations

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This work deals with the topological classification of singular foliation germs on $(\mathbb C^{2},0)$. Working in a suitable class of foliations we fix the topological invariants given by the separatrix set, the Camacho-Sad indices and the…

Dynamical Systems · Mathematics 2022-01-19 David Marín , Jean-François Mattei , Éliane Salem

This is the second in a pair of papers developing a framework to apply logarithmic methods in the study of singular curves of genus $1$. This volume focuses on logarithmic Gromov--Witten theory and tropical geometry. We construct a…

Algebraic Geometry · Mathematics 2019-10-16 Dhruv Ranganathan , Keli Santos-Parker , Jonathan Wise

The logarithmic Riemann surface Sigma_{log} is a classical holomorphic 1-manifold. It lives into R^4 and induces a covering space of C - 0 defined by exp. This paper suggests a geometric construction of it, derived as the limit of a…

Differential Geometry · Mathematics 2007-05-23 Nikolaos I. Katzourakis

We give a new proof of the classification of normal singular surface germs admitting non-invertible holomorphic self-maps and due to J. Wahl. We then draw an analogy between the birational classification of singular holomorphic foliations…

Algebraic Geometry · Mathematics 2010-03-16 Charles Favre

We prove that any holomorphic codimension 1 foliation on the complex projective plane has at most one singular point up to the action of an ad-hoc birational self map of the complex projective plane into itself. Consequently, any algebraic…

Dynamical Systems · Mathematics 2023-03-22 Dominique Cerveau , Julie Déserti

After a short review on foliations, we prove that a codimension 1 holomorphic foliation on $\mathbb P^3_{\mathbb C}$ with simple singularities is given by a closed rational 1-form. The proof uses Hironaka-Matsumura prolongation theorem of…

Dynamical Systems · Mathematics 2012-02-28 Dominique Cerveau

This article studies germs of holomorphic vector fields at the origin of C3 that are tangent to holomorphic foliations of codimension one. Two situations are considered. First, we assume hypotheses on the reduction of singularities of the…

Dynamical Systems · Mathematics 2018-12-07 Danúbia Junca , Rogério Mol

This article proves a uniform exponential decay estimate for Seiberg-Witten equations on non-compact 4-manifolds with exact symplectic ends of bounded geometry. This is an extension of the analysis for asymptotically flat almost K\"ahler…

Geometric Topology · Mathematics 2021-06-03 Boyu Zhang

We consider solutions of the 2D incompressible Euler equation in the form of $M\geq 1$ cocentric logarithmic spirals. We prove the existence of a generic family of spirals that are nonsymmetric in the sense that the angles of the individual…

Analysis of PDEs · Mathematics 2025-02-20 T. Cieślak , P. Kokocki , W. S. Ożański

In this work, we study dominant rational maps preserving singular holomorphic codimension one foliations on projective manifolds and that exhibit non-trivial transverse dynamics.

Algebraic Geometry · Mathematics 2020-11-02 Federico Lo Bianco , Jorge Pereira , Erwan Rousseau , Frédéric Touzet

We derive simple forms for saddle-node singular points of analytic foliations in the real or complex plane just by gluing foliated complex manifolds. We give the versal analytic deformation of the simplest model. We also derive a unique…

Differential Geometry · Mathematics 2007-06-25 Frank Loray

We describe the topological types of leaves of generic logarithmic foliations on the complex projective plane. We prove that all leaves, except for a finite many are biholomorphic to $\mathbb{C}$ or homeomorphic to the surface known as Loch…

Complex Variables · Mathematics 2019-09-25 Diego Rodríguez-Guzmán

Logarithmic conformal field theories have a vast range of applications, from critical percolation to systems with quenched disorder. In this paper we thoroughly examine the structure of these theories based on their symmetry properties. Our…

High Energy Physics - Theory · Physics 2017-11-22 Matthijs Hogervorst , Miguel Paulos , Alessandro Vichi

In this work we use our previous results on the topological classification of generic singular foliation germs on $(\mathbb C^{2},0)$ to construct complete families: after fixing the semi-local topological invariants we prove the existence…

Dynamical Systems · Mathematics 2024-06-07 David Marín , Jean-François Mattei , Eliane Salem

In this paper, the Euler characteristic formula for projective logarithmic minimal degenerations of surfaces with Kodaira dimension zero over a 1-dimensional complex disk is proved under a reasonable assumption and as its application, the…

Algebraic Geometry · Mathematics 2007-10-22 Koji Ohno

In this paper, we introduce the notion of Lipschitz modality for isolated singularities $ f: (\mathbb{C}^n, 0) \to (\mathbb{C}, 0)$ and provide a complete classification of Lipschitz unimodal singularities of corank~2 with non-zero…

Algebraic Geometry · Mathematics 2025-10-09 Nhan Nguyen , Maria Ruas , Saurabh Trivedi

We give essentially unique ``normal forms'' for germs of a holomorphic vector field of the complex plane in the neighborhood of an isolated singularity which is a p:q resonant-saddle. Hence each vector field of that type is conjugate, by a…

Dynamical Systems · Mathematics 2022-12-09 Loïc Teyssier

We describe a notion of categorical model for unitless fragments of (multiplicative) linear logic. The basic definition uses promonoidal categories, and we also give an equivalent elementary axiomatisation.

Category Theory · Mathematics 2013-05-13 Robin Houston , Dominic Hughes , Andrea Schalk

This text answers a question raised by Joux and the second author about the computation of discrete logarithms in the multiplicative group of finite fields. Given a finite residue field $\bK$, one looks for a smoothness basis for $\bK^*$…

Number Theory · Mathematics 2008-02-05 Jean-Marc Couveignes , Reynald Lercier

We prove that the linearization of a germ of holomorphic map of the type $F_\lambda(z)=\lambda(z+O(z^2))$ has a $ C^1$--holomorphic dependence on the multiplier $\lambda$. $C^1$--holomorphic functions are $ C^1$--Whitney smooth functions,…

Dynamical Systems · Mathematics 2008-02-27 Carlo Carminati , Stefano Marmi
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