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math.QA2001
Totally positive Toeplitz matrices and quantum cohomology of partial flag varieties
Konstanze Rietsch
We show that the set of totally positive unipotent lower-triangular Toeplitz matrices in form a real semi-algebraic cell of dimension . Furthermore we prove a natural c…
math.QA2001
Quantum Cohomology of Grassmannians and Total Positivity
Konstanze Rietsch
We give a proof of a result of D. Peterson's identifying the quantum cohomology ring of a Grassmannian with the reduced coordinate ring of a certain subvariety of . The total…