rt's publications center on mathematical applications in sculpture and other fields. His extensive online Encyclopedia of Polyhedra provides a substantial reference, which is used by students and researchers around the world. His groundbreaking Multidimensional Analysis text (Springer Verlag, 1995) gives fresh insight into the structures of linear algebra. His Zome Geometry book (Key Curriculum Press, 2001) takes the reader on a hands-on tour of the structures possible in three-dimensional space, and is designed to spark students' interest in geometry. He has been in the process of slowly writing a book on the history of geometry in art.