A variant of Petri's analysis of the canonical ideal of an algebraic curve.
A Very Simple Proof of Bott's Theorem.
Abel's Theorem and Webs.
Abundance theorem for minimal threefolds.
Acerca del genero virtual de la superficies algebráicas.
ACM sets of points in multiprojective space
Action du groupe additif
Addendum to "Criteria for Quasi-Projectivity".
Addendum zu: Quasi-Frobenius-Algebren und lokal vollständige Durchschnitte:
Additive vector fields, algebraicity and rationality.
Adhérence d'orbite et invariants.
Adjoint representation of and del Pezzo surfaces of degree
Let be a del Pezzo surface of degree , and let be the simple Lie group of type . We construct a locally closed embedding of a universal torsor over into the -orbit of the highest weight vector of the adjoint representation. This embedding is equivariant with respect to the action of the Néron-Severi torus of identified with a maximal torus of extended by the group of scalars. Moreover, the -invariant hyperplane sections of the torsor defined by the roots of are the inverse images...
Affine braid group actions on derived categories of Springer resolutions
In this paper we construct and study an action of the affine braid group associated with a semi-simple algebraic group on derived categories of coherent sheaves on various varieties related to the Springer resolution of the nilpotent cone. In particular, we describe explicitly the action of the Artin braid group. This action is a “categorical version” of Kazhdan-Lusztig-Ginzburg’s construction of the affine Hecke algebra, and is used in particular by the first author and I. Mirković in the course...
Affine compact almost-homogeneous manifolds of cohomogeneity one
This paper is one in a series generalizing our results in [12, 14, 15, 20] on the existence of extremal metrics to the general almost-homogeneous manifolds of cohomogeneity one. In this paper, we consider the affine cases with hypersurface ends. In particular, we study the existence of Kähler-Einstein metrics on these manifolds and obtain new Kähler-Einstein manifolds as well as Fano manifolds without Kähler-Einstein metrics. As a consequence of our study, we also give a solution to the problem...
Affine Curves in Characteristic p.
Affine Curves in Characteristic p are Set Theoretic Complete Intersections.
Affine Parts of Abelian Surfaces as Complete Intersections of Four Quadrics.
Algebraic approximation in analytic geometry.
Algebraic cycles and Hodge theory on generalized Reye congruences
Algebraic cycles on a general complete intersection of high multi-degree of a smooth projective variety