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The Triangle-Free Process and the Ramsey Number $R(3,k)$

The Triangle-Free Process and the Ramsey Number $R(3,k)$

by Gonzalo Fiz PontiverosSimon Griffiths and Robert Morris
Paperback
Publication Date: 30/04/2020

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The areas of Ramsey theory and random graphs have been closely linked ever since Erdos's famous proof in 1947 that the ``diagonal'' Ramsey numbers $R(k)$ grow exponentially in $k$. In the early 1990s, the triangle-free process was introduced as a model which might potentially provide good lower bounds for the ``off-diagonal'' Ramsey numbers $R(3,k)$. In this model, edges of $K_n$ are introduced one-by-one at random and added to the graph if they do not create a triangle; the resulting final (random) graph is denoted $G_n,\triangle $. In 2009, Bohman succeeded in following this process for a positive fraction of its duration, and thus obtained a second proof of Kim's celebrated result that $R(3,k) = \Theta \big ( k^2 / \log k \big )$. In this paper the authors improve the results of both Bohman and Kim and follow the triangle-free process all the way to its asymptotic end.
ISBN:
9781470440718
9781470440718
Category:
Mathematics
Format:
Paperback
Publication Date:
30-04-2020
Language:
English
Publisher:
American Mathematical Society
Country of origin:
United States
Dimensions (mm):
254x178mm
Simon Griffiths

Simon Griffiths is a lifestyle photographer, with gardens being his special area of interest. Simon has provided photography for over 30 illustrated books and has travelled around the world shooting content for Stephanie Alexander and Paul Bangay. He is the author of Shack: In praise of an Australian Icon, Shed and Boat.

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