On the geometry of the Zel'manov-Grishchuk cosmological homogeneity criterion

Details On the geometry of the Zel'manov-Grishchuk cosmological homogeneity criterion On the geometry of the Zel'manov-Grishchuk cosmological homogeneity criterion

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phla...87..157m&link_type=abstract

Physics Letters A, Volume 87, Issue 4, p. 157-158.

Physics

Scientific paper

The geometrical interpretation of the ``differential homogeneity'' criterion of Zel'manov and Grishchuk is discussed. It is related to the existence of spatial groups of motion, spatial conformal flatness, the absence of a ``magnetic part'' of the Weyl tensor, and hypersurface-orthogonal motion of fundamental observers who see no relative energy transport.

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