# Mathematical Digest

### Short Summaries of Articles about Mathematics

in the Popular Press

"It's not who you know...it's who the people you know know," by Jenny Hogan. *New Scientist,* 15 November 2003,page 14.

This article describes an experiment concocted by mathematicians to examinehow influence spreads through the scientific community. David Kempe and hiscolleagues at Cornell University studied a community of over 10,000 particlephysicists and devsed an algorithm to identify the most influential physicistsin the network. "What the researchers found is that only certain people areable to influence large proportions of the network," the article states.

*--- Allyn Jackson*