KnowraFriedmann equationsLinked fromLinked fromThe 34 pages that link to Friedmann equations, each with the reason it gives.All 34Broader topic 5Related 25Narrower topic 4Einstein field equationsBroader topic: They govern the expansion of idealized large-scale universes.Alexander FriedmannBroader topic: They express the dynamical content of Friedmann’s cosmological solutions.Physical cosmologyBroader topic: They translate the universe’s contents and curvature into its expansion history.History of general relativityBroader topic: They showed that Einstein’s equations permit expanding or contracting universes.Timeline of cosmological theoriesBroader topic: They describe how cosmic expansion changes with matter, radiation, and curvature.