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Paths of specified length in random k-partite graphs

2001
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Discrete Mathematics & Theoretical Computer Science
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International audience Fix positive integers k and l. Consider a random k-partite graph on n vertices obtained by partitioning the vertex set into V_i, (i=1, \ldots,k) each having size Ω (n) and choosing each possible edge with probability p. Consider any vertex x in any V_i and any vertex y. We show that the expected number of simple paths of even length l between x and y differ significantly depending on whether y belongs to the same V_i (as x does) or not. A similar phenomenon occurs when l

doi:10.46298/dmtcs.286
fatcat:vxwkravhozbttflbncm2ab2vqe