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math.CO2010
Coboundary expanders
Dominic Dotterrer, Matthew Kahle
We describe a natural topological generalization of edge expansion for graphs to regular CW complexes and prove that this property holds with high probability for certain random co…
math.CO2006★ 1 cited
Properties of the Generalized Zig-Zag Product of Graphs
Samuel Cooper, Dominic Dotterrer, Stratos Prassidis
The operation of zig-zag products of graphs is the analogue of the semidirect product of groups. Using this observation, we present a categorical description of zig-zag products in…