Mathematical Digest
Short Summaries of Articles about Mathematics in the Popular Press"The Big Match," by Ivar Ekeland. Nature, 4 June 1998. Game theory is a mathematical description of decisionmaking strategies. In this article in the scientific journal Nature, a famous problem from game theory and its solution are described. A zerosum game with two players is a situation where whatever one person wins, the other must lose. Nonzerosum games have more complicated possible outcomes, in which both players could wind up ahead of where they began, for example. Such games are more difficult to solve, and mathematicians were unsure of whether some could even be solved. The article explains that recently, the French mathematician Nicolas Vieille developed a complex proof that they all can be solved. Elizabeth Veomett
