224 citations
- Centre National de la Recherche ScientifiqueFR376 papers
- Université Grenoble AlpesFR309 papers
- Université Joseph FourierFR201 papers
- Laboratoire de Mathématiques d'OrsayFR42 papers
- Pôle de recherche et d'enseignement supérieur Université de GrenobleFR37 papers
- Institut de Mathématiques de Jussieu-Paris Rive GaucheFR31 papers
- Laboratoire de Mathématiques Jean LerayFR25 papers
- Université Paris-SudFR24 papers
- Institut Camille JordanFR19 papers
- Laboratoire de Physique et Modélisation des Milieux CondensésFR19 papers
- Sorbonne UniversitéFR19 papers
- Université Toulouse III - Paul SabatierFR17 papers
6 papers · 2 filters
The structure of normal algebraic monoids
Michel Brion, Alvaro Rittatore
We show that any normal algebraic monoid is an extension of an abelian variety by a normal affine algebraic monoid. This extends (and builds on) Chevalley's structure theorem for a…
Quantum cohomology of minuscule homogeneous spaces II : Hidden symmetries
Pierre-Emmanuel Chaput, Laurent Manivel, Nicolas Perrin
We prove that the quantum cohomology ring of any minuscule or cominuscule homogeneous space, once localized at the quantum parameter, has a non trivial involution mapping Schubert…
Log homogeneous varieties
Michel Brion
Given a complete nonsingular algebraic variety and a divisor with normal crossings, we say that is log homogeneous with boundary if the logarithmic tangent bundle $…
Towards an enumerative geometry of the moduli space of twisted curves and r-th roots
Alessandro Chiodo
The enumerative geometry of r-th roots of line bundles is the subject of Witten's conjecture and occurs in the calculation of Gromov-Witten invariants of orbifolds. It requires the…
Cubic hypersurfaces and integrable systems
Atanas Iliev, Laurent Manivel
We show that the family of 21-dimensional intermediate jacobians of cubic fivefolds containing a given cubic fourfold X is generically an algebraic integrable system. In the proof…
Constantes de Seshadri du diviseur anticanonique des surfaces de del Pezzo
Amaël Broustet
We compute in this note the Seshadri constants of the anticanonical bundle at every point of Del Pezzo surfaces. During the proof, we enlight the role of rational curves in our com…