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Packing and counting arbitrary Hamilton cycles in random digraphs

Abstract:
We prove packing and counting theorems for arbitrarily ori-ented Hamilton cycles in (n, p) for nearly optimal p (uptoalogcn factor). In particular, we show that given t =(1−o(1))npHamilton cycles C1, … , Ct, each of which is oriented arbi-trarily, a digraph D ∼ (n, p) w.h.p. contains edge disjointcopies of C1, … , Ct, provided p = (log3n∕n).Wealsoshowthat given an arbitrarily oriented n-vertex cycle C, a randomdigraph D ∼ (n, p) w.h.p. contains (1 ± o(1))n!pncopies ofC, provided p ≥ log1+o(1)n∕n.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1002/rsa.20796

Authors


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Institution:
University of Oxford
Division:
MPLS Division
Department:
Mathematical Institute
Department:
MATHEMATICAL INSTITUTE
Role:
Author


More from this funder
Funding agency for:
Long, E
Grant:
Starter Grant 633509


Publisher:
Wiley
Journal:
Random Structures and Algorithms More from this journal
Volume:
54
Issue:
3
Pages:
499-514
Publication date:
2018-09-08
Acceptance date:
2018-02-27
DOI:
ISSN:
1098-2418


Keywords:
Pubs id:
pubs:827659
UUID:
uuid:f4783349-a931-4449-a296-1f9811535e69
Local pid:
pubs:827659
Source identifiers:
827659
Deposit date:
2018-03-03

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