A bound on the Euler number for certain Calabi-Yau 3-folds.
A Construction of Surfaces with pg = 1, q = 0 and 2...(K2) ...8. Counter Examples of the Global Torelli Theorem.
A few remarks on blowing-up and connectedness.
A Formula for the Euler characteristic of a real algebraic manifold.
A Gauss-Bonnet theorem for motivic cohomology.
A remark on the Hodge type of projective varieties of low degree.
A Second Lefschetz Theorem for General Manifold Sections in Complex Projective Space.
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.
Affine varieties dominated by C2.
Algebraic Structures on Certain 3-Folds.
Algebraische und topologische reelle Zykeln unter birationalen Transformationen.
Algebro-geometric analogues of Donaldson's polynomials.
Asymptotic behaviour of numerical invariants of algebraic varieties
We show that if the degree of a nonsingular projective variety is high enough, maximization of any of the most important numerical invariants, such as class, Betti number, and any of the Chern or middle Hodge numbers, leads to the same class of extremal varieties. Moreover, asymptotically (say, for varieties whose total Betti number is big enough) the ratio of any two of these invariants tends to a well-defined constant.
Bases for the homology groups of the Hilbert scheme of points in the plane
Bemerkungen über Zusammenhangseigenschaften und mengentheoretische Darstellung projektiver algebraischer Mannigfaltigkeiten
Bounds for Chern classes of semistable vector bundles on complex projective spaces
This work concerns bounds for Chern classes of holomorphic semistable and stable vector bundles on . Non-negative polynomials in Chern classes are constructed for 4-vector bundles on and a generalization of the presented method to r-bundles on is given. At the end of this paper the construction of bundles from complete intersection is introduced to see how rough the estimates we obtain are.
Bounds for the number of connected components and the first Betti number mod two of a real algebraic surface
Chern Numbers of Algebraic Surfaces.
Chernklassen semi-stabiler Vektorraumbündel vom Rang 3 auf dem komplex-projektiven Raum.
Classes d'Euler équivariantes et points rationnellement lisses
Lorsqu’un tore agit sur une variété algébrique complexe munie de la topologie transcendante, nous définissons la classe d’Euler -équivariante d’un point fixe isolé , qu’il soit lisse ou non. Cette classe est une fraction rationnelle à un nombre fini de variables et lorsque est rationnellement lisse dans , c’est un polynôme qui s’identifie canoniquement à la classe d’Euler équivariante usuelle, mais, réciproquement, lorsque la classe d’Euler équivariante est polynomiale, il n’est pas toujours...