Preprints


pdf file A history of central sets (to appear in Ergodic Theory and Dynamical Systems)

pdf file (With W. Brian) Factoring a minimal ultrafilter into a thick part and a syndetic part

pdf file (With D. Strauss and L. Zamboni) Combining extensions of the Hales-Jewett Theorem with Ramsey Theory in other structures

pdf file Notions of size in a semigroup -- an update from a historical perspective

pdf file (With K. Pleasant) Central Sets Theorem for arbitrary adequate partial semigroups

pdf file (With D. Strauss) Some new results about the ubiquitous semigroup H

pdf file The research of seven students at Howard University

pdf file (With D. Strauss) Some new results about the smallest ideal of beta S