Abstract
For perturbed Friedmann models of vanishing and positive curvature the time development of shear is computed by means of a linear perturbation theory. As for the smallness of the perturbation functions mathematically exact and physically meaningful conditions are stated. The shear is computed for different stages of the universe.
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Störmer, O. Shear in a perturbed Friedmann universe. Gen Relat Gravit 1, 103–115 (1970). https://doi.org/10.1007/BF00756889
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DOI: https://doi.org/10.1007/BF00756889