Richard K. Guy is a Professor Emeritus in the Department of Mathematics at the University of Calgary. A professor is a senior teacher and researcher, usually in a college or university. ... Mathematics is the study of quantity, structure, space and change. ... The University of Calgary is a university of approximately 28,000 students located in the north-western part of Calgary, Alberta, Canada (pop. ...

He is best known for co-authorship of Winning Ways for your Mathematical Plays and authorship of Unsolved Problems in Number Theory (ISBN 0-387-94289-0), but has published over 100 papers and books covering Combinatorial game theory, Number theory and Graph theory. Winning Ways for your Mathematical Plays (ISBN 1568811306) by Elwyn R. Berlekamp, John H. Conway, and Richard K. Guy is a compendium of information on mathematical games. ... Combinatorial game theory (CGT) is a mathematical theory that studies a certain kind of game. ... Traditionally, number theory is that branch of pure mathematics concerned with the properties of integers. ... A diagram of a graph with 6 vertices and 7 edges. ...