On Vanishing of Gromov--Witten Invariants

Fuente: arXiv
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Main Authors: Pak, Igor, Robichaux, Colleen, Xu, Weihong
Format: Preprint
Published: 2025
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author Pak, Igor
Robichaux, Colleen
Xu, Weihong
author_facet Pak, Igor
Robichaux, Colleen
Xu, Weihong
contents We consider the decision problem of whether a particular Gromov--Witten invariant on a partial flag variety is zero. We prove that for the $3$-pointed, genus zero invariants, this problem is in the complexity class ${\sf AM}$ assuming the Generalized Riemann Hypothesis (GRH), and therefore lies in the second level of polynomial hierarchy ${\sf PH}$. For the proof, we construct an explicit system of polynomial equations through a translation of the defining equations. We also need to prove an extension of the Parametric Hilbert's Nullstellensatz to obtain our central reduction.
format Preprint
id arxiv_https___arxiv_org_abs_2508_15715
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On Vanishing of Gromov--Witten Invariants
Pak, Igor
Robichaux, Colleen
Xu, Weihong
Algebraic Geometry
Discrete Mathematics
Combinatorics
Primary: 14N35, Secondary: 05E14, 14M15, 68Q17, 68Q25
We consider the decision problem of whether a particular Gromov--Witten invariant on a partial flag variety is zero. We prove that for the $3$-pointed, genus zero invariants, this problem is in the complexity class ${\sf AM}$ assuming the Generalized Riemann Hypothesis (GRH), and therefore lies in the second level of polynomial hierarchy ${\sf PH}$. For the proof, we construct an explicit system of polynomial equations through a translation of the defining equations. We also need to prove an extension of the Parametric Hilbert's Nullstellensatz to obtain our central reduction.
title On Vanishing of Gromov--Witten Invariants
topic Algebraic Geometry
Discrete Mathematics
Combinatorics
Primary: 14N35, Secondary: 05E14, 14M15, 68Q17, 68Q25
url https://arxiv.org/abs/2508.15715