collaborators

7 papers

math.AG2026

Dynamical degrees of twisted rational maps

Marc Abboud, Junyi Xie

Twisted rational maps arise naturally in relative algebraic dynamics: if a rational self-map preserves a fibration, then the induced map on the generic fiber is usually not an ordi…

math.AG2026

On the dynamics of endomorphisms of affine surfaces

Marc Abboud

In [FJ07], Favre and Jonsson developed tools from valuative theory to study the dynamics of a dominant endomorphism of the complex affine plane. We extend this theory to the case o…

math.DS2026

Uniform bound on common periodic points for families of regular plane polynomial automorphisms

Marc Abboud, Yugang Zhang

Given two one-dimensional families and of regular plane polynomial automorphisms parameterised by an algebraic curve , all defined over some number field , such that…

math.AG2025

A dynamical characterisation of smooth cubic affine surfaces of Markov type

Marc Abboud

Using valuative techniques, we show that a smooth affine surface with a non-elementary automorphism group and completable by a cycle of rational curves is either the algebraic toru…

math.AG2025

Rigidity of periodic points for loxodromic automorphisms of affine surfaces

Marc Abboud

We show that two automorphisms of an affine surface with dynamical degree strictly larger than 1 share a Zariski dense set of periodic points if and only if they have the same peri…

math.AG2025

Unlikely intersections problem for automorphisms of Markov surfaces

Marc Abboud

We study the problem of unlikely intersections for automorphisms of Markov surfaces of positive entropy. We show for certain parameters that two automorphisms with positive entropy…