10 citations · 27 across the 19 of their papers we have counts for
20 papers
Plane curve singularities via divides
Norbert A'Campo, Pablo Portilla Cuadrado
Generic relative immersions of compact one-manifolds in the closed unit disk, i.e. divides, provide a powerful combinatorial framework, and allow a topological construction of fibe…
Geometry on surfaces, a source for mathematical developments
Norbert A'Campo, Athanase Papadopoulos
We present a variety of geometrical and combinatorial tools that are used in the study of geometric structures on surfaces: volume, contact, symplectic, complex and almost complex…
Tête-à-tête twists, monodromies and representation of elements of Mapping Class Group
Norbert A'Campo, Javier Fernandez de Bobadilla, Maria Pe Pereira +1
We study monodromies of plane curve singularities and pseudo-periodic homeomorphisms of oriented surfaces with boundary, following an original idea of the first author: tête-à-tête…
Signatures of monic polynomials
Norbert A'Campo
To a univariate monic polynomial is attached a special planar forest that is called the picture of the polynomial. Isotopy classes of pictures are called signatures. All combinator…
A Commentary on Teichmüller's paper "Über Extremalprobleme der konformen Geometrie" (On extremal problems in conformal geometry)
Norbert A'Campo, Athanase Papadopoulos
We comment on the paper Über Extremalprobleme der konformen Geometrie (On extremal problems in conformal geometry) by Teichmüller, published in 1941. This paper contains ideas on a…
Actions of the Absolute Galois Group
Norbert A'Campo, Lizhen Ji, Athanase Papadopoulos
We review some ideas of Grothendieck and others on actions of the absolute Galois group Γ Q of Q (the automorphism group of the tower of finite extensions of Q), related to the geo…