19 citations · 76 across the 22 of their papers we have counts for
23 papers
On combinatorics of string polytopes in types and
Yunhyung Cho, Naoki Fujita, Eunjeong Lee
A string polytope is a rational convex polytope whose lattice points parametrize a highest weight crystal basis, which is obtained from a string cone by explicit affine inequalitie…
On the enumeration of Fano Bott manifolds
Yunhyung Cho, Eunjeong Lee, Mikiya Masuda +1
Fano Bott manifolds bijectively correspond to signed rooted forests with some equivalence relation. Using this bijective correspondence, we enumerate the isomorphism classes of Fan…
Toric Richardson varieties of Catalan type and Wedderburn-Etherington numbers
Eunjeong Lee, Mikiya Masuda, Seonjeong Park
We associate a complete non-singular fan with a polygon triangulation. Such a fan appears from a certain toric Richardson variety, called of Catalan type introduced in this paper.…
On Schubert varieties of complexity one
Eunjeong Lee, Mikiya Masuda, Seonjeong Park
Let be a Borel subgroup of and a maximal torus contained in . Then acts on and every Sc…
Unique toric structure on a Fano Bott manifold
Yunhyung Cho, Eunjeong Lee, Mikiya Masuda +1
We prove that if there exists a -preserving graded ring isomorphism between integral cohomology rings of two Fano Bott manifolds, then they are isomorphic as toric varieties.…
Poincare polynomials of generic torus orbit closures in Schubert varieties
Eunjeong Lee, Mikiya Masuda, Seonjeong Park +1
The closure of a generic torus orbit in the flag variety of type is known to be a permutohedral variety and its Poincare polynomial agrees with the Eulerian polynomial. I…