Friedmann universe

Friedmann model

[freed-muhn]
noun Astronomy.
any model of the universe deduced from a homogeneous, isotropic solution of Einstein's field equations without a cosmological constant. Such models form the mathematical basis for many modern cosmologies and provide for expansion or contraction of the universe.
Also called Friedmann universe.


Origin:
named after Alexander Friedmann, (1885–1925), Russian mathematician, who made the necessary calculations in 1922

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