Birth and growth of multicyclic components in random hypergraphs

  • Authors:
  • Vlady Ravelomanana

  • Affiliations:
  • -

  • Venue:
  • Theoretical Computer Science
  • Year:
  • 2010

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Abstract

Define an @?-component to be a connected b-uniform hypergraph with k edges and k(b-1)-@? vertices. In this paper, we investigate the growth of size and complexity of connected components of a random hypergraph process. We prove that the expected number of creations of @?-components during a random hypergraph process tends to 1 as b is fixed and @? tends to infinity with the total number of vertices n while remaining @?=o(n^1^/^3). We also show that the expected number of vertices that ever belong to an @?-component is ~12^1^/^3@?^1^/^3n^2^/^3(b-1)^-^1^/^3. We prove that the expected number of times hypertrees are swallowed by @?-components is ~2^1^/^33^-^1^/^3n^1^/^3@?^-^1^/^3(b-1)^-^5^/^3. It follows that with high probability the largest @?-component during the process is of size of order O(@?^1^/^3n^2^/^3(b-1)^-^1^/^3). Our results give insight into the size of giant components inside the phase transition of random hypergraphs and generalize previous results about graphs.