4 papers · 1 filter
Hilbert scheme of a pair of codimension two linear subspaces
Dawei Chen, Izzet Coskun, Scott Nollet
We study the component H_n of the Hilbert scheme whose general point parameterizes a pair of codimension two linear subspaces in P^n for n > 2. We show that H_n is smooth and isomo…
Towards Mori's program for the moduli space of stable maps
Dawei Chen, Izzet Coskun, Charley Crissman
We introduce and compute the class of a number of effective divisors on the moduli space of stable maps , which, for small d, provide a good understanding of…
Linear series on ribbons
Dawei Chen
A ribbon is a double structure on P^1. The geometry of a ribbon is closely related to that of a smooth curve. In this note we consider linear series on ribbons. Our main result is…
Stable Base Locus Decompositions of Kontsevich Moduli Spaces
Dawei Chen, Izzet Coskun
In this paper, we determine the stable base locus decomposition of the Kontsevich moduli spaces of degree two and three stable maps to Grassmannians. This gives new examples of the…