Programming Language Semantics, Category Theory, Theory of Computation, Functional Languages, Domain Theory, Logic
National Science Foundation Research Grant 1987-89
Monad Compositions I: General Constructions and Recursive Distributive Laws, Theory and Applications of Categories, Vol 18, (2007), 172-208. Joint work with Ernie Manes.
Monad Compositions II: Kleisli Strength, Mathematical Structures in Computer Science, Cambridge University Press, Volume 18, (2008), No. 3, 613-643. Joint work with Ernie Manes