3.1 Singularities in spatially homogeneous cosmologies
 3.2 Numerical methods
  3.2.1 Symplectic methods
  3.2.2 Other methods
 3.3 Mixmaster dynamics
  3.3.1 Overview
  3.3.2 Recent developments
  3.3.3 Going further
 3.4 Inhomogeneous cosmologies
  3.4.1 Overview
  3.4.2 Gowdy cosmologies and their generalizations
  3.4.3 U (1) symmetric cosmologies
  3.4.4 Going further