Article ID Journal Published Year Pages File Type
4651293 Discrete Mathematics 2006 4 Pages PDF
Abstract

In this note we study some properties of the spectrum of a connected graph G with four different eigenvalues, and (spectrally maximum) diameter three. When G is regular, this is the case, for instance, when G is a distance-regular graph.

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Related Topics
Physical Sciences and Engineering Mathematics Discrete Mathematics and Combinatorics
Preview
On the spectrum of an extremal graph with four eigenvalues
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