The Hubble series: convergence properties and redshift variables

  title={The Hubble series: convergence properties and redshift variables},
  author={C'eline Cattoen and Matt Visser},
  journal={Classical and Quantum Gravity},
In cosmography, cosmokinetics and cosmology, it is quite common to encounter physical quantities expanded as a Taylor series in the cosmological redshift z. Perhaps the most well-known exemplar of this phenomenon is the Hubble relation between distance and redshift. However, we now have considerable high-z data available; for instance, we have supernova data at least back to redshift z ≈ 1.75. This opens up the theoretical question as to whether or not the Hubble series (or more generally any… 

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