Isospectral Reductions of Dynamical Networks

Details Isospectral Reductions of Dynamical Networks Isospectral Reductions of Dynamical Networks

2010-10-20

arxiv.org/abs/1010.4272v1

Mathematics

Dynamical Systems

5 pages, 4 figures

Scientific paper

We present a general and flexible procedure which allows for the reduction (or expansion) of any dynamical network while preserving the spectrum of the network's adjacency matrix. Computationally, this process is simple and easily implemented for the analysis of any network. Moreover, it is possible to isospectrally reduce a network with respect to any network characteristic including centrality, betweenness, etc. This procedure also establishes new equivalence relations which partition all dynamical networks into spectrally equivalent classes. Here, we present general facts regarding isospectral network transformations which we then demonstrate in simple examples. Overall, our procedure introduces new possibilities for the analysis of networks in ways that are easily visualized.

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