Mixed ladder determinantal varieties
The authors generalize the notion of ladder determinantal varieties, which was introduced by Abhyankar, by allowing ideals of minors of different size of a matrix of indeterminates. Then they explore the relation between these mixed ladder determinantal varieties and Schubert varieties. Next they show that, up to product by affine spaces, each of these varieties is a basic open set in a classical ladder determinantal variety and that it contains as a basic open set another classical ladder determinantal variety.
scientific article; zbMATH DE number 1525268
scientific article