A proof of van Douwen’s right ideal theorem
Dennis E. Davenport, Neil Hindman · Proceedings of the American Mathematical Society · 1991
In 1979 Eric K. van Douwen announced a powerful theorem about the Stone-Čech compactification of a discrete semigroup which he called The Right Ideal Theorem . Its proof, however, was lost with his untimely death. In this paper we present a proof of the theorem and a derivation of some of its corollaries.