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math.CO2016★ 1 cited
An algebraic approach to lifts of digraphs
C. Dalfó, M. A. Fiol, M. Miller +2
We study the relationship between two key concepts in the theory of (di)graphs: the quotient digraph, and the lift of a base (voltage) digraph. These techniques contract or e…
math.CO2016★ 1 cited
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…