Universal piecewise polynomiality for counting curves in toric surfaces

Fuente: arXiv
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Auteurs principaux: Hahn, Marvin Anas, Reda, Vincenzo
Format: Preprint
Publié: 2024
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author Hahn, Marvin Anas
Reda, Vincenzo
author_facet Hahn, Marvin Anas
Reda, Vincenzo
contents Inspired by piecewise polynomiality results of double Hurwitz numbers, Ardila and Brugallé introduced an enumerative problem which they call double Gromov--Witten invariants of Hirzebruch surfaces. These invariants serve as a two-dimensional analogue and satisfy a similar piecewise polynomial structure. More precisely, they introduced the enumeration of curves in Hirzebruch surfaces satisfying point conditions and tangency conditions on the two parallel toric boundaries. These conditions are stored in four partitions and the resulting invariants are piecewise polynomial in their entries. Moreover, they found that these expressions also behave polynomially with respect to the parameter determining the underlying Hirzebruch surfaces. Based on work of Ardila and Block, they proposed that such a polynomiality could also hold while changing between more general toric surfaces corresponding to $h$-transverse polygons. In this work, we answer this question affirmatively. Moreover, we express the resulting invariants for $h$-transverse polygons as matrix elements in the two-dimensional bosonic Fock space.
format Preprint
id arxiv_https___arxiv_org_abs_2407_03761
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Universal piecewise polynomiality for counting curves in toric surfaces
Hahn, Marvin Anas
Reda, Vincenzo
Algebraic Geometry
Combinatorics
14N10, 14T90, 14N35
Inspired by piecewise polynomiality results of double Hurwitz numbers, Ardila and Brugallé introduced an enumerative problem which they call double Gromov--Witten invariants of Hirzebruch surfaces. These invariants serve as a two-dimensional analogue and satisfy a similar piecewise polynomial structure. More precisely, they introduced the enumeration of curves in Hirzebruch surfaces satisfying point conditions and tangency conditions on the two parallel toric boundaries. These conditions are stored in four partitions and the resulting invariants are piecewise polynomial in their entries. Moreover, they found that these expressions also behave polynomially with respect to the parameter determining the underlying Hirzebruch surfaces. Based on work of Ardila and Block, they proposed that such a polynomiality could also hold while changing between more general toric surfaces corresponding to $h$-transverse polygons. In this work, we answer this question affirmatively. Moreover, we express the resulting invariants for $h$-transverse polygons as matrix elements in the two-dimensional bosonic Fock space.
title Universal piecewise polynomiality for counting curves in toric surfaces
topic Algebraic Geometry
Combinatorics
14N10, 14T90, 14N35
url https://arxiv.org/abs/2407.03761