Conformally flat FRW metrics
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We find a new family of non-separable coordinate transformations bringing the FRW metrics into the manifestly conformally flat form. Our results are simple and complete, while our derivation is quite explicit. We also calculate all the FRW curvatures, including the Weyl tensor.
19 pages; LaTeX; no figures; misprints corrected, a few references and short notes added
19 pages; LaTeX; no figures; misprints corrected, a few references and short notes added