1983 Ph.D. (Mathematics), University of North Carolina at Chapel Hill, USA 1973 M.Sc. (Mathematics), Chulalongkorn University, Thailand 1970 M.Sc. (Mathematics), Chulalongkorn University, Thailand
Graph Theory and Combinatorics
Hyperstructures
Boundary value problems of ordinary differential equations
Publications:
S. Chaopraknoi, W.Hemakul, K. Kwakpatoon, Homomorphisms of some hypergroups, Thai Journal of Mathematics, 5(3), Special Issue 2007 (Annual Meeting in Mathematics, 2007)