Ramsey Orderly Algebras as a New Approach to Ramsey Algebras

Abstract

Ramsey algebras are algebras that induce Ramsey spaces, which are generalizations of the Ellentuck space and Milliken's space. Previous work suggests a possible local version of Ramsey algebras induced by infinite sequences. Hence, we introduce a new structure called orderly algebra. Under our canonical setup, an algebra is Ramsey if and only if every of its induced orderly algebra is Ramsey. In this paper, we present justifications for this novel notion as a sound approach for further study on Ramsey algebras.