# Mathematical Digest

### Short Summaries of Articles about Mathematics

in the Popular Press

"Match of thedata," by Jonathan Trout. *Nature Science Update,* 23 May 2001.

Trout summarizes results of Yi-Cheng Zhang who has concluded that: "The moreinformation people have, the happier the world can be." That is, providinginformation is not a zero-sum game. Zhang studied this problem in the frameworkof the stable marriage problem (can a matchmaker arrange marriages so that notwo people would rather elope together than stay with their spouses?). He foundthat more information in the community led to "happier" marriages. The field ofresearch this involves is called econophysics. The full paper is titled"Happier World with More Information" and appeared in *Physica A*(Proceedings of the NATO ARW on Application of Physics in Economic Modelling,8-10 February 2001, Prague).

*--- Mike Breen *