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math.CO2021★ 1 cited
On folded cluster patterns of affine type
Byung Hee An, Eunjeong Lee
A cluster algebra is a commutative algebra whose structure is decided by a skew-symmetrizable matrix or a quiver. When a skew-symmetrizable matrix is invariant under an action of a…
math.CO2016★ 26 cited
On the f-vectors of Gelfand-Cetlin polytopes
Byung Hee An, Yunhyung Cho, Jang Soo Kim
A Gelfand-Cetlin polytope is a convex polytope obtained as an image of certain completely integrable system on a partial flag variety. In this paper, we give an equivalent descript…