On Hilbert scheme of complete intersection on the biprojective

Abstract

Abstract

Abstract The goal of this paper is to construct the Hilbert scheme of complete intersections in the biprojective space $$ X = \mathbb {P}^m \times \mathbb {P}^n $$ X = P m × P n . For this purpose, we define a partial order on the bidegrees of the bihomogeneous forms. As a consequence of this construction, we provide an explicit computation of the Hilbert scheme for curves of genus 7 and 8 listed in [1] and [11] that are complete intersections. Finally, we construct the coarse moduli space of canonical complete intersections in $$ \mathbb {P}^m \times \mathbb {P}^n $$ P m × P n .