12 citations · 40 across the 78 of their papers we have counts for
Showing 2020Show all
3 papers · 1 filter
math.CO2020
Enumeration of cospectral and coinvariant graphs
Aida Abiad, Carlos A. Alfaro
We present enumeration results on the number of connected graphs up to 10 vertices for which there is at least one other graph with the same spectrum (a cospectral mate), or at lea…
math.CO2020★ 12 cited
Coloring the normalized Laplacian for oriented hypergraphs
Aida Abiad, Raffaella Mulas, Dong Zhang
The independence number, coloring number and related parameters are investigated in the setting of oriented hypergraphs using the spectrum of the normalized Laplace operator. For t…
math.CO2020
Neumaier graphs with few eigenvalues
Aida Abiad, Bart De Bruyn, Jozefien D'haeseleer +1
A Neumaier graph is a non-complete edge-regular graph containing a regular clique. In this paper we give some sufficient and necessary conditions for a Neumaier graph to be strongl…