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.
Statements (47)
| 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 Russia
NERFINISHED
→
|
| 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 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 |
Friedmann cosmological models
→
Friedmann–Lemaître–Robertson–Walker metric → |
| publicationYear |
1922
→
|
| relatedTo |
Einstein static universe
→
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 → |
Referenced by (2)
| Subject (surface form when different) | Predicate |
|---|---|
|
Alexander Friedmann
→
Alexander Friedmann ("On the Possibility of a World with Constant Negative Curvature of Space") → |
notableWork |