69 citations · 209 across the 37 of their papers we have counts for
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math.AG2014
The double Gromov-Witten invariants of Hirzebruch surfaces are piecewise polynomial
Federico Ardila, Erwan Brugalle
We define the double Gromov-Witten invariants of Hirzebruch surfaces in analogy with double Hurwitz numbers, and we prove that they satisfy a piecewise polynomiality property analo…
math.CO2014
The topology of the external activity complex of a matroid
Federico Ardila, Federico Castillo, Jose Alejandro Samper
We prove that the external activity complex of a matroid is shellable. In fact, we show that every linear extension of LasVergnas's external/internal order $<_{…
math.CO2014
Algebraic and geometric methods in enumerative combinatorics
Federico Ardila
A survey written for the upcoming "Handbook of Enumerative Combinatorics".