(With L. Jones and D. Strauss)
The relationships among many notions
of largeness for subsets of a semigroup
(to appear in Semigroup Forum)
A history of central sets
(to appear in Ergodic Theory and Dynamical Systems)
(With W. Brian)
Factoring a minimal ultrafilter into a thick part and
a syndetic part
(With D. Strauss and L. Zamboni)
Combining extensions of the Hales-Jewett Theorem
with Ramsey Theory in other structures
Notions of size in a semigroup -- an update from
a historical perspective
(With K. Pleasant)
Central Sets Theorem for arbitrary adequate partial semigroups
(With D. Strauss)
Some new results about the ubiquitous semigroup H
The research of seven students at Howard University