A moduli space of stable sheaves on a cubic threefold

Fuente: arXiv
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Auteurs principaux: Ma, Shihao, Yang, Song
Format: Preprint
Publié: 2024
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author Ma, Shihao
Yang, Song
author_facet Ma, Shihao
Yang, Song
contents In this paper, we prove that the moduli space $\overline{M}_{X}(ν)$ of $H$-Gieseker semistable sheaves on a smooth cubic threefold $X$ with Chern character $ν=(4,-H,-\frac{5}{6}H^{2},\frac{1}{6}H^{3})$ is non-empty, smooth and irreducible of dimension $8$. Moreover, we give a set-theoretic description of the moduli space $\overline{M}_{X}(ν)$, which also yields that $\overline{M}_{X}(ν)$ is a birational model of the moduli space of smooth quartic rational curves in $X$.
format Preprint
id arxiv_https___arxiv_org_abs_2406_10104
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle A moduli space of stable sheaves on a cubic threefold
Ma, Shihao
Yang, Song
Algebraic Geometry
In this paper, we prove that the moduli space $\overline{M}_{X}(ν)$ of $H$-Gieseker semistable sheaves on a smooth cubic threefold $X$ with Chern character $ν=(4,-H,-\frac{5}{6}H^{2},\frac{1}{6}H^{3})$ is non-empty, smooth and irreducible of dimension $8$. Moreover, we give a set-theoretic description of the moduli space $\overline{M}_{X}(ν)$, which also yields that $\overline{M}_{X}(ν)$ is a birational model of the moduli space of smooth quartic rational curves in $X$.
title A moduli space of stable sheaves on a cubic threefold
topic Algebraic Geometry
url https://arxiv.org/abs/2406.10104