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138 papers · 1 filter
Enumerative geometry of surfaces
Thomas Dedieu
The aim of these notes is to explain various enumerative results about surfaces without assuming familiarity with Gromov--Witten theory. The enumerative results in question ar…
Two lectures on the enumeration of curves by means of floor diagrams
Thomas Dedieu
We discuss, following Mikhalkin, Brugallé, and many others, the counting of curves on toric surfaces with prescribed genus, Newton polygon, and intersection pattern with the toric…
Node polynomials for curves on surfaces
Thomas Dedieu
This text is a presentation of a set of formulae, first found by Vainsencher (for ) and shortly after improved by Kleiman and Piene, counting -nodal curves in a complet…
More birational involutions
Pietro Beri, Laurent Manivel
For a very general polarized K3 surface of degree , we describe in geometrical terms a birational involution of the Hilbert scheme of points on the surface,…
BRIDGES Lectures: G2 in action, and a mathematical theory of exceptions
Laurent Manivel
The BRIDGES meeting in gauge theory, extremal structures, and stability was held in June 2024 at l'Institut d'Études Scientifiques de Cargèse in Corsica, organized by Daniele Faenz…
On linear sections of the spinor tenfold II
Yingqi Liu, Laurent Manivel
Following previous work by A. Kuznetsov, we study the Fano manifolds obtained as linear sections of the spinor tenfold in . Up to codimension three there are finit…