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math.CO2019
Enumeration and Extensions of Word-representants
Marisa Gaetz, Caleb Ji
Given a finite word over a finite alphabet , consider the graph with vertex set and with an edge between two elements of if and only if the two elements alternate in…
math.CO2019★ 4 cited
Hessenberg varieties associated to ad-nilpotent ideals
Caleb Ji, Martha Precup
We consider Hessenberg varieties in the flag variety of with the property that the corresponding Hessenberg function defines an ad-nilpotent ideal. Each such Hes…