(With D. Strauss)
Subsemigroups of beta S containing the idempotents
Topology Proceedings 35 (2010), 233-246.
(With D. Strauss)
Cartesian products of sets satisfying the Central Sets Theorem
Topology Proceedings 35 (2010), 203-223.
(With D. Strauss)
Sets satisfying the Central Sets Theorem
Semigroup Forum 79 (2009), 480-506.
(With D. Strauss)
Density and invariant means in
left cancellative left amenable semigroups
Topology and its Applications 156 (2009), 2614-2628.
The research of thirteen students at Howard University
Topology and its Applications 156 (2009), 2550-2559.
(With D. Strauss)
Cartesian products of sets satisfying the Central Sets Theorem
Topology Proceedings 35 (2010), 203-223.
(With D. Strauss)
A simple characterization of sets satisfying the Central Sets Theorem,
New York J. Math. 15 (2009), 405-413.
Small sets satisfying the
Central Sets Theorem in Combinatorial Number Theory, B. Landman,
M. Nathanson, J. Nesetril, R. Nowakowski, C. Pomerance,
and A. Robertson, editors, deGruyter, Berlin, 2009, 57-64.
Also published as
Integers 9(Supplement) (2007), Article 5.
(With D. De) Image partition
regularity near zero Discrete Mathematics
309 (2009), 3219-3232