7 citations · 8 across the 4 of their papers we have counts for
4 papers · 1 filter
On the local spectra of the subconstituents of a vertex set and completely pseudo-regular codes
M. Cámara, J. Fàbrega, M. A. Fiol +1
The local spectrum of a vertex set in a graph has been proven to be very useful to study some of its metric properties. It also has applications in the area of pseudo-distance-regu…
A differential approach for bounding the index of graphs under perturbations
C. Dalfó, M. A. Fiol, E. Garriga
This paper presents bounds for the variation of the spectral radius of a graph after some perturbations or local vertex/edge modifications of . The perturbations cons…
Moments in graphs
C. Dalfó, M. A. Fiol, E. Garriga
Let be a connected graph with vertex set and a {\em weight function} that assigns a nonnegative number to each of its vertices. Then, the {\em -moment} of at ver…
Dual concepts of almost distance-regularity and the spectral excess theorem
Cristina Dalfó, Edwin R. van Dam, Miquel Angel Fiol +1
Generally speaking, `almost distance-regular' graphs share some, but not necessarily all, of the regularity properties that characterize distance-regular graphs. In this paper we p…