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math.CO2020
On the inverse eigenvalue problem for block graphs
Jephian C. -H. Lin, Polona Oblak, Helena Šmigoc
The inverse eigenvalue problem of a graph aims to find all possible spectra for matrices whose -entry, for , is nonzero precisely when is adjacent to . I…
math.CO2020★ 1 cited
Complex Hadamard Diagonalisable Graphs
Ada Chan, Shaun Fallat, Steve Kirkland +3
In light of recent interest in Hadamard diagonalisable graphs (graphs whose Laplacian matrix is diagonalisable by a Hadamard matrix), we generalise this notion from real to complex…