"The wildcard set's size in the density hales-jewett theorem" by Randall McCutcheon
 

The wildcard set's size in the density hales-jewett theorem

Abstract

In this paper prove results concerning restrictions on the cardinality of the wildcard set in the density Hales-Jewett theorem, establishing in particular that for general k one may choose this cardinality from any IP set and that for k = 2 it may be chosen to be a square, thus providing an abstract extension of Sárközy's theorem on square differences in sets of positive upper density.

Publication Title

Electronic Journal of Combinatorics

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