Laparoscopy was used to evaluate 100 women who consistently reported pelvic pain in the same location for a minimum of six months. These findings were compared with those of 50 asymptomatic women whoâ€¦ (More)

The central theme of this paper is the following result: any three-point genus zero Gromov-Witten invariant on a Grassmannian X is equal to a classical intersection number on a homogeneous space Y ofâ€¦ (More)

One way to define an operation in intersection theory is to define a map on the group of cycles together with a map on the group of rational equivalences which commutes with the boundary operation.â€¦ (More)

A natural question is to determine which algebraic stacks are quotient stacks. In this paper we give some partial answers and relate it to the question of whether, for a scheme X, the natural mapâ€¦ (More)

Let K be an algebraically closed field, X a K-scheme, and X(K) the set of closed points in X. A constructible set C âŠ† X(K) is a finite union of subsets Y (K) for finite type K-subschemes Y in X. Aâ€¦ (More)

â€” We study the arithmetic of certain Del Pezzo surfaces of degree 2. We produce examples of Brauer-Manin obstruction to the Hasse principle, coming from 2and 4-torsion elements in the Brauer group.

Fultonâ€™s universal Schubert polynomials [F3] represent degeneracy loci for morphisms of vector bundles with rank conditions coming from a permutation. The quiver formula of Buch-Fulton [BF] expressesâ€¦ (More)

Let V be a vector space with a nondegenerate symmetric form and OG be the orthogonal Grassmannian which parametrizes maximal isotropic subspaces in V . We give a presentation for the (small) quantumâ€¦ (More)

We construct an algebraic homology functor for Artin stacks of finite type over a field, and we develop intersection-theoretic properties. DOI: 10.1007/s002220050351 Posted at the Zurich Openâ€¦ (More)