
 Symmetry and Bifurcation in Biology 
  In this case, the package is the exploitation of symmetries in nonlinear dynamial systems, and the strong relation between symmetry and pattern formation. 
  It has become apparent that the symmetries of a system of nonlinear ordinary or partial differential equations can be used, in a systematic and unified way, to analyze, predict, and understand many general mechanisms of patternformation. 
  But a huge range of biological systems possess approximate symmetries (for example all organisms in a species are approximately identical), and the best way to model such systems is to exploit the symmetry of an idealized model, and then consider what changes might occur to the conclusions if the symmetry is close, but not exact. 
 www.pims.math.ca /birs/workshops/2003/03w5075 (584 words) 
