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math.AG2026

Topology of complex plane curves: braid monodromy, local and global problems

Enrique Artal Bartolo

The embeddings of complex plane projective curves in the plane are a cornerstone of the topological study of algebraic varieties. In this work, we deal with the local and global as…

math.AG2026

Denef-Loeser zeta functions of suspensions and Lê-Yomdin singularities

Enrique Artal Bartolo, Pedro D. González Pérez, Manuel González Villa +1

The holomorphy conjecture for suspensions of plane curve singularities and the holomorphy and monodromy conjectures for Lê-Yomdin singularities of surfaces are proved. The first pa…

math.AG2025

Dicritical divisors and hypercurvettes

Enrique Artal Bartolo, Willem Veys

Germs of rational functions~ on points of smooth varieties~ define germs of rational maps to the projective line. Assume that is in the indeterminacy locus of . If…

math.AG2025

Superisolated singularities and friends

Enrique Artal Bartolo

Superisolated surface singularities in were introduced by I. Luengo to prove that the -constant stratum may be singular. The main feature of this family is th…

math.AG2025

On a suspension formula for Denef-Loeser zeta functions

E. Artal Bartolo, P. D. González Pérez, M. González Villa +1

Formulas for the topological zeta functions of suspensions by 2 points are due to Artal et al. We generalize these formulas to the motivic level and for arbitrary suspensions, by u…

math.AG2024

Milnor number of plane curve singularities in arbitrary characteristic

Enrique Artal Bartolo, Pierrette Cassou-Noguès

Reduced power series in two variables with coefficients in a field of characteristic zero satisfy a well-known formula that relates a codimension related to the normalization of a…