10 citations · 27 across the 19 of their papers we have counts for
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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…
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…
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…
On Grothendieck's tame topology
Norbert A'Campo, Lizhen Ji, Athanase Papadopoulos
Grothendieck's Esquisse d'un programme is often referred to for the ideas it contains on dessins d'enfants, the Teichm{ü}ller tower, and the actions of the absolute Galois group on…
On Grothendieck's construction of Teichmüller space
Norbert A'Campo, Lizhen Ji, Athanase Papadopoulos
In his 1944 paper Veränderliche Riemannsche Flächen , Teichmüller defined a structure of complex manifold on the set of isomorphism classes of marked closed Riemann surfaces of gen…