On the Curvature of Space

E87936

"On the Curvature of Space" is a pioneering 1922 paper by Alexander Friedmann that introduced non-static, expanding-universe solutions to Einstein’s field equations, laying the theoretical foundation for modern cosmology.

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Predicate Object
instanceOf cosmology paper
physics paper
scientific paper
acknowledgedBy 20th-century cosmologists
assumes homogeneity of the universe
isotropy of the universe
author Alexander Friedmann
basedOnTheory Einstein field equations
contribution demonstrated possibility of expanding universe
provided mathematical basis for homogeneous and isotropic cosmological models
showed that Einstein field equations admit time-dependent solutions
countryOfOrigin Soviet Union
surface form: Soviet Russia
criticizedBy Albert Einstein
describes closed universe models
negatively curved space
open universe models
positively curved space
spatially homogeneous universes
field cosmology
theoretical physics
historicalSignificance first publication of expanding-universe solutions
foundation for relativistic cosmology
influenced Big Bang
surface form: Big Bang theory

Georges Lemaître's cosmological work
modern cosmology
influencedBy Albert Einstein's theory of general relativity
introducedConcept expanding universe solutions
non-static cosmological solutions
language Russian
laterRecognizedAs pioneering work in cosmology
mathematicalTool Riemannian geometry
differential equations
proposedModel FLRW cosmological models
surface form: Friedmann cosmological models

FLRW cosmological models
surface form: Friedmann–Lemaître–Robertson–Walker metric
publicationYear 1922
relatedTo Einstein static universe
Einstein field equations
surface form: Friedmann equations

cosmological constant
status landmark paper in cosmology
timeDependence scale factor of the universe
topic cosmic expansion
curvature of space
dynamics of the universe
non-static universe
usesConcept cosmological principle
curved spacetime
general relativity

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Alexander Friedmann notableWork On the Curvature of Space
Alexander Friedmann notableWork On the Curvature of Space
this entity surface form: On the Possibility of a World with Constant Negative Curvature of Space