Dickson's lemma and weak Ramsey theory

Abstract

We explore the connections between Dickson's lemma and weak Ramsey theory. We show that a weak version of the Paris--Harrington principle for pairs in $c$ colors and miniaturized Dickson's lemma for $c$-tuples are equivalent over $\mathsf{RCA}_0^{\ast}$. Furthermore, we look at a cascade of consequences for several variants of weak Ramsey's theorem.