3 papers
math.CO2024
Strongly nice property and Schur positivity of graphs
Ethan Y. H. Li, Grace M. X. Li, Arthur L. B. Yang +1
Motivated by the notion of nice graphs, we introduce the concept of strongly nice property, which can be used to study the Schur positivity of symmetric functions. We show that a g…
math.CO2023
Transversals in a collections of trees
Ethan Y. H. Li, Luyi Li, Ping Li
Let be a fixed family of graphs on vertex set and be a collection of elements in . We investigated the transversal problem of finding t…
math.CO2023
Induced log-concavity of equivariant matroid invariants
Alice L. L. Gao, Ethan Y. H. Li, Matthew H. Y. Xie +2
Inspired by the notion of equivariant log-concavity, we introduce the concept of induced log-concavity for a sequence of representations of a finite group. For an equivariant matro…