An N-superconcentrator is a directed, acyclic graph with N input nodes and N output nodes such that every subset of the inputs and every subset of the outputs of same cardinality ...
d Abstract) N. Alon ∗ M. Capalbo † July 28, 2002 Using a new recursive technique, we present an explicit construction of an infinite family of N-superconcentrators of density...
Reachability queries on large directed graphs have attracted much attention recently. The existing work either uses spanning structures, such as chains or trees, to compress the c...