Surfaces of order 1 in Grassmannians.
Surfaces of Small Degree.
Surfaces rationnelles non-spéciales dans IP4.
Surfaces réglées non compactes et groupes discrets.
Surfaces whose canonical maps are of odd degrees.
Surfaces with K2 = 2, pg = 1, q = 0
Surjectivity of the Period Map of K 3 Surfaces of Degree 2.
Symétries des surfaces rationnelles génériques.
Symmetric functions and the Chern characters of a hypersurface with singularities
Symmetric homology planes.
Symmetrische Modulflächen der Diskriminante p2.
Symplectic involutions on deformations of K3[2]
Let X be a hyperkähler manifold deformation equivalent to the Hilbert square of a K3 surface and let φ be an involution preserving the symplectic form. We prove that the fixed locus of φ consists of 28 isolated points and one K3 surface, and moreover that the anti-invariant lattice of the induced involution on H 2(X, ℤ) is isomorphic to E 8(−2). Finally we show that any couple consisting of one such manifold and a symplectic involution on it can be deformed into a couple consisting of the Hilbert...
Symplectic structure of the moduli space of sheaves on an abelian or K3 surface.
Symplectic structures on moduli spaces of framed sheaves on surfaces
We provide generalizations of the notions of Atiyah class and Kodaira-Spencer map to the case of framed sheaves. Moreover, we construct closed two-forms on the moduli spaces of framed sheaves on surfaces. As an application, we define a symplectic structure on the moduli spaces of framed sheaves on some birationally ruled surfaces.
Syzygies and Koszul cohomology of smooth projective varieties for arbitrary dimension.
Syzygies and the Abel-Jacobi map for cyclic coverings.
Syzygies of abelian surfaces embedded in ... (...).