# Restrictions of Steiner Bundles and Divisors on the Hilbert Scheme of Points in the Plane

 Title: Restrictions of Steiner Bundles and Divisors on the Hilbert Scheme of Points in the Plane Author: Huizenga, Jack Citation: Huizenga, Jack. 2012. Restrictions of Steiner Bundles and Divisors on the Hilbert Scheme of Points in the Plane. Doctoral dissertation, Harvard University. Full Text & Related Files: Huizenga_gsas.harvard_0084L_10271.pdf (461.1Kb; PDF) Abstract: The Hilbert scheme of $$n$$ points in the projective plane parameterizes degree $$n$$ zero-dimensional subschemes of the projective plane. We examine the dual cones of effective divisors and moving curves on the Hilbert scheme. By studying interpolation, restriction, and stability properties of certain vector bundles on the plane we fully determine these cones for just over three fourths of all values of $$n$$. A general Steiner bundle on $$\mathbb{P}^N$$ is a vector bundle $$E$$ admitting a resolution of the form $$0 \rightarrow \mathcal{O}_{\mathbb{P}^N} (−1)^s {M \atop \rightarrow} \mathcal{O}^{s+r}_{\mathbb{P}^N} \rightarrow E \rightarrow 0$$, where the map $$M$$ is general. We complete the classification of slopes of semistable Steiner bundles on $$\mathbb{P}^N$$ by showing every admissible slope is realized by a bundle which restricts to a balanced bundle on a rational curve. The proof involves a basic question about multiplication of polynomials on $$\mathbb{P}^1$$ which is interesting in its own right. Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:9571108 Downloads of this work: