Power law singularities in orthogonal spatially homogeneous cosmologies (Q794004)

The known orthogonal spatially homogeneous exact solutions with perfect fluid source are classified by the power asymptote they admit (that is, by the lowest power of t in a power series expansion in terms of t near the singularity \(t=0)\). In many cases this leads to simpler forms of the known solutions and suggests methods of deriving new ones.