28 citations · 36 across the 13 of their papers we have counts for
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math.CO2023★ 1 cited
Gram mates, sign changes in singular values, and isomorphism
Sooyeong Kim, Steve Kirkland
We study distinct matrices and , called \textit{Gram mates}, such that and . We characterize Gram mates where one can be obtained from the oth…
math.CO2023
Fiedler vectors with unbalanced sign patterns
Sooyeong Kim, Steve Kirkland
In spectral bisection, a Fielder vector is used for partitioning a graph into two connected subgraphs according to its sign pattern. In this article, we investigate graphs having F…
math.CO2023
Numerical ranges of cyclic shift matrices
Mao-Ting Chien, Steve Kirkland, Chi-Kwong Li +1
We study the numerical range of an cyclic shift matrix, which can be viewed as the adjacency matrix of a directed cycle with weighted arcs. In particular, we consid…