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The 3-Colour Ramsey Number of a 3-Uniform Berge Cycle

Published online by Cambridge University Press:  02 July 2010

ANDRÁS GYÁRFÁS  and
GÁBOR N. SÁRKÖZY
ANDRÁS GYÁRFÁS
Affiliation:
Computer and Automation Research Institute, Hungarian Academy of Sciences, Budapest, PO Box 63, Budapest, Hungary, H-1518 (e-mail: gyarfas@sztaki.hu)
GÁBOR N. SÁRKÖZY
Affiliation:
Computer and Automation Research Institute, Hungarian Academy of Sciences, Budapest, PO Box 63, Budapest, Hungary, H-1518 (e-mail: gyarfas@sztaki.hu) Computer Science Department, Worcester Polytechnic Institute, Worcester, MA 01609, USA (e-mail: gsarkozy@cs.wpi.edu)
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Abstract

The asymptotics of 2-colour Ramsey numbers of loose and tight cycles in 3-uniform hypergraphs were recently determined [16, 17]. We address the same problem for Berge cycles and for 3 colours. Our main result is that the 3-colour Ramsey number of a 3-uniform Berge cycle of length n is asymptotic to . The result is proved with the Regularity Lemma via the existence of a monochromatic connected matching covering asymptotically 4n/5 vertices in the multicoloured 2-shadow graph induced by the colouring of Kn(3).

Type
Paper
Information
Combinatorics, Probability and Computing , Volume 20 , Issue 1 , January 2011 , pp. 53 - 71
Copyright
Copyright © Cambridge University Press 2010

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