10 citations · 20 across the 23 of their papers we have counts for
4 papers · 1 filter
On bipartite mixed graphs
C. Dalfó, M. A. Fiol, N. López
Mixed graphs can be seen as digraphs that have both arcs and edges (or digons, that is, two opposite arcs). In this paper, we consider the case where such graphs are bipartite. As…
The Dilating Method for Cayley digraphs on finite Abelian groups
F. Aguiló, M. A. Fiol, S. Pérez
A geometric method for obtaining an infinite family of Cayley digraphs of constant density on finite Abelian groups is presented. The method works for any given degree and it is ba…
From expanded digraphs to lifts of voltage digraphs and line digraphs
C. Dalfó, M. A. Fiol, M. Miller +1
In this note we present a general approach to construct large digraphs from small ones. These are called expanded digraphs, and, as particular cases, we show the close relationship…
Equivalent characterizations of the spectra of graphs and applications to measures of distance-regularity
V. Diego, J. Fàbrega, M. A. Fiol
As it is well known, the spectrum (of the adjacency matrix ) of a graph , with distinct eigenvalues other than its spectral radius , usually provides…