B.Curtis Eaves, Alan J. Hoffman, et al.
Mathematical Programming
It is well known that there are at most four Moore graphs of diameter 2, i.e., graphs of diameter 2, maximum degree d, and d2 + 1 vertices. The purpose of this paper is to prove that with the exception of C4, there are no graphs of diameter 2, of maximum degree d, and with d2 vertices. Copyright © 1980 Wiley Periodicals, Inc., A Wiley Company
B.Curtis Eaves, Alan J. Hoffman, et al.
Mathematical Programming
Arlette Gaillard, Heinz Groeflin, et al.
Theoretical Computer Science
Terrence R. Scott, Alan J. Hoffman
IEEE Transactions on Circuits and Systems
Alan J. Hoffman
Aequationes Mathematicae