On the Classical Multicolor Ramsey Number R(3,3,3)

Abstract

In this paper, we are interested in the problem of evaluation of the classical multicolor Ramsey number i?(3,3,3). We first convert it successfully into a system of clauses of 3-literals each, i.e., a 3-SAT instance. We then describe the algebraic method of Greenwood and Gleason [2], which is based on the finite field Fl6, that constructs a monochromatic triangle-free edge-coloring with three colors of the Ramsey graph Kl6 associated with the number i?(3,3,3). We propose a simple and new coloring method, completely dif¬ferent from that of Greenwood and Gleason, which colors the edges of the Ramsey graph Ku with three colors without any monochromatic triangle.