Xuqiang Qin

collaborators

4 papers

math.AG2022

Birational geometry of Beauville-Mukai systems III: asymptotic behavior

Xuqiang Qin, Justin Sawon

Suppose that a Hilbert scheme of points on a K3 surface S of Picard rank one admits a rational Lagrangian fibration. We show that if the degree of the surface is sufficiently large…

math.AG2018

Compactification of the moduli space of instanton sheaves on the Fano threefold $V_{5}$

Xuqiang Qin

We study semistable sheaves of rank $2$ with Chern classes $c_{1} = 0$ , $c_{2} = 2$ and $c_{3} = 0$ on the Fano 3-fold $V_{5}$ of Picard number $1$ , degree $5$ and index $2$ . We show that the mo…

math.AG2018

Blow ups of $P^{n}$ as quiver moduli for exceptional collections

Xuqiang Qin

Suppose $P_{m}^{n}$ is the blow up of $P^{n}$ at a linear subspace of dimension $m$ , $L = {L_{1}, \dots, L_{r}}$ is a (not necessarily full) strong exceptional collection o…

math.AG2018

Moduli of quiver representations for exceptional collections on surfaces

Xuqiang Qin, Shizhuo Zhang

Suppose $S$ is a smooth projective surface over an algebraically closed field $k$ , $L = {L_{1}, \dots, L_{n}}$ is a full strong exceptional collection of line bundles on $S$ .…

Birational geometry of Beauville-Mukai systems III: asymptotic behavior

Compactification of the moduli space of instanton sheaves on the Fano threefold V5​

Blow ups of Pn as quiver moduli for exceptional collections

Moduli of quiver representations for exceptional collections on surfaces

Compactification of the moduli space of instanton sheaves on the Fano threefold $V_{5}$

Blow ups of $P^{n}$ as quiver moduli for exceptional collections