4 papers · 1 filter
On the second largest eigenvalue of certain graphs in the perfect matching association scheme
Himanshu Gupta, Allen Herman, Alice Lacaze-Masmonteil +2
The perfect matching association scheme is a set of relations on the perfect matchings of the complete graph on vertices. The relations between perfect matchings are defined b…
The intersection densities of transitive actions of with cyclic point stabilizers
Angelot Behajaina, Roghayeh Maleki, Andriaherimanana Sarobidy Razafimahatratra
Given a finite transitive group , the {intersection density} of is defined as the ratio between the size of the largest subsets of in which any t…
On the Terwilliger algebras of quasi-thin Schurian association schemes
Roghayeh Maleki, Andriaherimanana Sarobidy Razafimahatratra
An association scheme is triply transitive if its automorphism group is transitive, and the centralizer algebra of a point stabilizer of its automorphism group coincides with the T…
On the -polynomial property of bipartite graphs admitting a uniform structure
Blas Fernández, Roghayeh Maleki, Štefko Miklavič +1
Let denote a finite, connected graph with vertex set . Fix and let denote the eccentricity of . For mutually distinct scalars $\{θ^*_i\}_{i=…