Splitting criteria for vector bundles on the symplectic isotropic Grassmannian

  • Pedro Macias Marques Universidade de Évora
  • Luke Oeding Università di Firenze
Keywords: Vector bundles, Splitting criteria, Isotropic Grassmannian

Abstract

We extend a theorem of Ottaviani on cohomological splitting criterion for vector bundles over the Grassmannian to the case of the symplectic isotropic Grassmanian. We find necessary and sufficient conditions for the case of the Grassmanian of symplectic isotropic lines. For the general case the generalization of Ottaviani’s conditions are sufficient for vector bundles over the symplectic isotropic Grassmannian. By a calculation in the program LiE, we find that Ottaviani’s conditions are necessary for Lagrangian Grassmannian of isotropic k-planes for k ≤ 6, but they fail to be necessary for the case of the Lagrangian Grassmannian of isotropic 7-planes. Finally, we find a related set of necessary and sufficient splitting criteria for the Lagrangian Grassmannian.

Author Biographies

Pedro Macias Marques, Universidade de Évora

Departamento de Matemática

Assistente

Luke Oeding, Università di Firenze

Dipartimento di Matematica "U. Dini"

NSF Poetdoctoral Fellow

Section
Articoli