activity
20172026
most citedVanishing cycles, plane curve singularities, and framed mapping class groups

10 citations · 11 across the 9 of their papers we have counts for

collaborators

10 papers

math.AG2026

A reduction theorem for Lê's conjecture

Pablo Portilla Cuadrado

Let be a holomorphic map germ admitting an injective representative. We prove that if , th…

math.AG2026

Real morsifications via the trace map

Pablo Portilla Cuadrado

We prove that every reduced real plane curve singularity admits a real morsification. This settles a question of A'Campo and Gusein-Zade, later stated as conjectures by Leviant--Sh…

math.AG2025

On the integral variation map of isolated plane curves singularities

Pablo Portilla Cuadrado, Baldur Sigurðsson

The integral variation map and algebraic monodromy of isolated plane curve singularities are important homological invariants of the singularity which are still far from being comp…

math.GT2025

Vanishing arcs for isolated plane curve singularities

Hanwool Bae, Cheol-Hyun Cho, Dongwook Choa +2

The variation operator associated with an isolated hypersurface singularity is a classical topological invariant that relates relative and absolute homologies of the Milnor fiber v…

math.GT2025

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…

math.AG2023

The total spine of the Milnor fibration of a plane curve singularity

Pablo Portilla Cuadrado, Baldur Sigurðsson

For any plane curve singularity defined by an analytic function germ , we construct a spine on each Milnor fiber simultaneously, that realizes the vanishing topology. In order t…

math.GT2020★ 10 cited

Vanishing cycles, plane curve singularities, and framed mapping class groups

Pablo Portilla Cuadrado, Nick Salter

Let f be an isolated plane curve singularity with Milnor fiber of genus at least 5. For all such f, we give (a) an intrinsic description of the geometric monodromy group that does…

math.GT2020

Positive factorizations of pseudoperiodic homeomorphisms

Pablo Portilla Cuadrado

We generalize a classical result concerning smooth germs of surfaces, by proving that monodromies on links of isolated complex surface singularities associated with reduced holomor…

math.GT2017

General tête-à-tête graphs and Seifert manifolds

Pablo Portilla Cuadrado

Tête-à-tête graphs and relative tête-à-tête graphs were introduced by N. A'Campo in 2010 to model monodromies of isolated plane curves. By recent workof Fdez de Bobadilla, Pe Perei…

math.GT2017★ 1 cited

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…