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 Initial point singularities are of interest in general relativity
  because considerable evidence suggests that our universe had
  one. Prescribing initial data for such solutions presents some
  obvious problems though. Work over the last few decades has
  explored how to do this for a variety of reasonable matter models
  though, including polytropic fluids, electromagnetic radiation,
  and kinetic theory, with or without collisions. This talk will
  mostly be an overview but I will briefly discuss some recent
  work with Ho Lee, Ernesto Nungesser and Paul Tod.