About restricting 2-bundles on IP3 to planes.
About some Riemann surfaces and plane tilings.
About the adjunction process for polarized algebraic surfaces.
About the computation of the signature of surface singularities z N + g(x, y) = 0
In this article we describe our experiences with a parallel Singular implementation of the signature of a surface singularity defined by z N + g(x; y) = 0.
About the Euler-Poincaré characteristic of semi-algebraic sets defined with two inequalities.
We express the Euler-Poincaré characteristic of a semi-algebraic set, which is the intersection of a non-singular complete intersection with two polynomial inequalities, in terms of the signatures of appropriate bilinear symmetric forms.
About the group law for the Jacobi variety of a hyperelliptic curve.
About the image of the total signature map in the two-dimensional case.
About the Witt rings of function fields of algebroid quadratic quasihomogeneous surfaces.
Abschätzungen für die Anzahl der holomorphen Abbildungen zwischen algebraischen Räumen.
Absolute cohomological purity
Absolute derivations and zeta functions.
Abstract class field theory (formatting of modules).
Abundance conjecture for 3-folds : case
Abundance theorem for minimal threefolds.
Acerca del genero virtual de la superficies algebráicas.
ACM bundles on general hypersurfaces in P5 of low degree.
In this paper we show that on a general hypersurface of degree r = 3,4,5,6 in P5 a rank 2 vector bundle ε splits if and only if h1ε(n) = h2ε(n) = 0 for all n ∈ Z. Similar results for r = 1,2 were obtained in [15], [16] and [2].
ACM bundles, quintic threefolds and counting problems
We review some facts about rank two arithmetically Cohen-Macaulay bundles on quintic threefolds. In particular, we separate them into seventeen natural classes, only fourteen of which can appear on a general quintic. We discuss some enumerative problems arising from these.
ACM embeddings of curves of a quadric surface
Let C be a smooth integral projective curve admitting two pencils ga1 and gb1 such that ga1 + gb1 is birational. We give conditions in order that the complete linear system |sga1 + rgb1| be normally generated or very ample.
ACM sets of points in multiprojective space
Action du groupe additif