Heather Jordon Author

Gary Chartrand is a professor emeritus of mathematics at Western Michigan University, Kalamazoo, Michigan, USA.

Vincent Vatter earned his PhD in Combinatorics from Rutgers University in 2006 under the direction of Doron Zeilberger. He is currently a Professor of Mathematics at the University of Florida and resides in Florida with his two daughters, Madison and Vienna.

Heather Jordon

Ping Zhang