** Recent results on partition regularity of infinite matrices**
(to appear in *Connections in Discrete Mathematics*, Cambridge
University Press)

** Research of Wis Comfort on ultrafilters and the Stone-Cech
compactification** (to appear in *Topology and its Applications*)

(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 D. Strauss)
** Image partition regularity of matrices over commutative semigroups**

(With D. Strauss)
** Sets and mappings in beta S which are not Borel**

(With D. Strauss)
** Some new examples of infinite image partition regular
matrices**

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