activity
20102023
most citedOn the Complexity of the Positive Semidefinite Zero Forcing Number

2 citations · 3 across the 9 of their papers we have counts for

collaborators

9 papers

math.CO2023

Spectral Applications of Vertex-Clique Incidence Matrices Associated with a Graph

Shaun Fallat, Seyed Ahmad Mojallal

In this paper, we demonstrate a useful interaction between the theory of clique partitions, edge clique covers of a graph, and the spectra of graphs. Using a clique partition and a…

math.CO2023

The Spark of Symmetric Matrices Described by a Graph

Louis Deaett, Shaun Fallat, Veronika Furst +3

We investigate the sparsity of null vectors of real symmetric matrices whose off-diagonal pattern of zero and nonzero entries is described by the adjacencies of a graph. We use the…

math.CO2023

The -Analogue of Zero Forcing for Certain Families of Graphs

Shaun Fallat, Neha Joshi, Roghayeh Maleki +6

Zero forcing is a combinatorial game played on a graph with the ultimate goal of changing the colour of all the vertices at minimal cost. Originally this game was conceived as a on…

math.CO20231 cited

Regular Graphs of Degree at most Four that Allow Two Distinct Eigenvalues

Wayne Barrett, Shaun Fallat, Veronika Furst +3

For an matrix , let be the number of distinct eigenvalues of . If is a connected graph on vertices, let be the set of all real sy…

math.CO2023

The Strong Spectral Property of Graphs: Graph Operations and Barbell Partitions

Sarah Allred, Emelie Curl, Shaun Fallat +4

The utility of a matrix satisfying the Strong Spectral Property has been well established particularly in connection with the inverse eigenvalue problem for graphs. More recently t…

math.CO2023

Spectral arbitrariness for trees fails spectacularly

Shaun M. Fallat, H. Tracy Hall, Rupert H. Levene +4

If is a graph and is an ordered multiplicity list which is realizable by at least one symmetric matrix with graph , what can we say about the eigenvalues of all…