Generalizes graph coverings and unfoldings to weighted versions, proves analogous theorems to Leighton-Norris, and obtains a canonical factorization of universal coverings plus a weighted version of characteristic polynomial factorization.
Some topological graph theory for topologists: A sampler of covering space construction, in Topology and Combinatorial Group Theory, P
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Unfoldings and coverings of weighted graphs
Generalizes graph coverings and unfoldings to weighted versions, proves analogous theorems to Leighton-Norris, and obtains a canonical factorization of universal coverings plus a weighted version of characteristic polynomial factorization.