Close Connections
It's a small world of crickets, nerve cells, computers, and people
Minor changes in the arrangement of links between members of a network can dramatically alter the rate at which information, computer viruses, or infectious diseases spread throughout the system.
References:
Watts, D.J., and S.H. Strogatz. 1998. Collective dynamics of 'small-world' networks. Nature 393(June 4):442.
Further Readings:
Bollobás, B., and F.R.K. Chung. 1988. The diameter of a cycle plus a random matching. SIAM Journal on Discrete Mathematics 1:328.
Chung, F.R.K. 1997. Spectral Graph Theory. Providence, R.I.: American Mathematical Society.
Collins, James J., and Carson C. Chow. It's a small world. Nature 393(June 4):409.
Peterson, I. 1998. The Jungles of Randomness: A Mathematical Safari. New York: Wiley.
______. 1996. Groups, graphs, and Paul Erdos. Science News Online (June 15).
______. 1996. Keeping the beat. Science News 149(April 13):236.
______. 1991. Step in time. Science News 140(Aug. 31):136.
A description of an enormous graph describing mathematical collaborations can be found at http://www.acs.oakland.edu/~grossman/Erdoshp.html.
You can play the Kevin Bacon game (involving connections between movie actors) at http://www.cs.virginia.edu/~bct7m/bacon.html.
Sources:
Carson C. Chow
Department of Mathematics
Boston University
Boston, MA 02215
Fan R.K. Chung
Department of Mathematics
University of Pennsylvania
Philadelphia, PA 19104-6395
Web site: http://www.math.upenn.edu/~chungJames J. Collins
Department of Biomedical Engineering
Boston University
Boston, MA 02215Simon A. Levin
Princeton Environmental Institute
Princeton University
Princeton, NJ 08544-1003Steven H. Strogatz
Department of Theoretical and Applied Mechanics
212 Kimball Hall
Cornell University
Ithaca, NY 14853
Web site: http://www.tam.cornell.edu/Strogatz.html.Duncan Watts
Lazarsfeld Center for the Social Sciences
Columbia University
812 International Affairs Building
420 W. 118th Street
New York, NY 10027
8/22/98
copyright 1998 ScienceService