Constraints on dark energy equation of state parameters from cosmic
  topology
  Despite our present-day inability to predict the topology of the universe it
is expected that we should be able to detect it in the near future. A
nontrivial detectable topology of the space section of the universe can be
probed for all homogeneous and isotropic universes through the
circles-in-the-sky. We discuss briefly how one can use this observable
attribute to set constraints on the dark energy equation of state parameters.
