Kenneth H. Rosen holds a B.S. from the Univ. of Michigan and a PhD from MIT. Rosen has published many research papers on number theory and mathematical modeling. He is the author of Discrete Mathematics and its Applications, 8th ed, used extensively worldwide, a leading number theory text, and several books on UNIX. He has held positions at four universities and continues to teach. Rosen spent 22 years at AT&T Bell Labs, as a distinguished member of the technical staff. At Bell Labs he worked on a wide range of projects relating to computing and telecommunications, which led to 70 patents.He is an associate editor of the journal Discrete Mathematics. Douglas R. Shier is Emeritus Professor in the Department of Mathematical Sciences, Clemson University. His research has been in mathematical and statistical modeling, algorithm development, and networks. He has served as Associate Editor for several journals in Operations Research and is currently Editor-in-Chief of the international journal Networks. He has published over 100 articles, appearing in journals in the areas of environmental and health sciences, operations research, statistics, and computer science. He has authored the books Network Reliability and Algebraic Structures and Puzzles, Paradoxes, and Problem Solving; as well he has co-edited the volumes Applied Mathematical Modeling and the first edition of the CRC Handbook of Discrete and Applied Mathematics. Wayne Goddard is from Durban, South Africa and completed his graduate studies at the University of Natal and the Massachusetts Institute of Technology. He currently teaches at Clemson University with a joint appointment in the School of Computing and the Department of Mathematical Sciences. He has published over a hundred papers in multiple areas of graph theory and combinatorics, but also has research interests in distibuted algorithms and game-playing. He is author of the textbooks Introducing the Theory of Computation and Research Methodology: An Introduction, and serves as managing editor of the journal Discrete Mathematics.