DOUBLE LINES IN THE QUINTIC DEL PEZZO FOURFOLD

초록

Let Y be the quintic del Pezzo 4-fold defined by the linear section of Gr(2, 5) by P7. In this paper, we describe the locus of double lines in the Hilbert scheme of coincs in Y. As a corollary, we obtain the desigularized model of the moduli space of stable maps of degree 2 in Y. We also compute the intersection Poincare & PRIME; polynomial of the stable map space.

키워드