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math.AG2017★ 1 cited
Sanya lectures : geometry of spherical varieties
Nicolas Perrin
These are expanded notes from lectures on the geometry of spherical varieties given in Sanya. We review some aspects of the geometry of spherical varieties. We first describe the s…
math.AG2017
On quantum cohomology of Grassmannians of isotropic lines, unfoldings of -singularities, and Lefschetz exceptional collections
John Alexander Cruz Morales, Alexander Kuznetsov, Anton Mellit +2
The subject of this paper is the big quantum cohomology rings of symplectic isotropic Grassmannians . We show that these rings are regular. In particular, by "gen…
math.AG2017
Smooth Schubert varieties and generalized Schubert polynomials in algebraic cobordism of Grassmannians
Jens Hornbostel, Nicolas Perrin
We provide several ingredients towards a generalization of the Littlewood-Richardson rule from Chow groups to algebraic cobordism. In particular, we prove a simple product-formula…