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math.AG2019★ 1 cited
Positivity determines the quantum cohomology of Grassmannians
Anders S. Buch, Chengxi Wang
We prove that if X is a Grassmannian of type A, then the Schubert basis of the (small) quantum cohomology ring QH(X) is the only homogeneous deformation of the Schubert basis of th…
math.AG2019
Euler characteristics in the quantum -theory of flag varieties
Anders S. Buch, Sjuvon Chung, Changzheng Li +1
We prove that the sheaf Euler characteristic of the product of a Schubert class and an opposite Schubert class in the quantum -theory ring of a (generalized) flag variety …