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SIAMCOMP
2011
12 years 11 months ago
A Combinatorial Construction of Almost-Ramanujan Graphs Using the Zig-Zag Product
Reingold, Vadhan and Wigderson [21] introduced the graph zig-zag product. This product combines a large graph and a small graph into one graph, such that the resulting graph inher...
Avraham Ben-Aroya, Amnon Ta-Shma
IM
2007
13 years 4 months ago
The Spectral Gap of a Random Subgraph of a Graph
We examine the relationship of a graph G and its random subgraphs which are defined by independently choosing each edge with probability p. Suppose that G has a spectral gap λ (...
Fan R. K. Chung, Paul Horn