Alejandro Vargas

collaborators

2 papers

math.AG2019

A short note on Cayley-Salmon equations

Marvin Anas Hahn, Sara Lamboglia, Alejandro Vargas

A Cayley-Salmon equation for a smooth cubic surface $S$ in $P^{3}$ is an expression of the form $l_{1} l_{2} l_{3} - m_{1} m_{2} m_{3} = 0$ such that the zero set is $S$ and $l_{i}$ , $m_{j}$ are…

math.CO2019

Catalan-many tropical morphisms to trees; Part I: Constructions

Jan Draisma, Alejandro Vargas

We investigate the tree gonality of a genus- $g$ metric graph, defined as the minimum degree of a tropical morphism from any tropical modification of the metric graph to a metric tr…