Cosmology
Friedmann finds solutions of Einsteins equations that allow an expanding or contracting universe
Historical biography archive · Updated 2026-11-03
Alexander Friedmann Biography and Timeline
Follow Alexander Friedmann through 3 dated historical records for Russia.
Alexander Friedmann, historical timeline
A chronological timeline drawn from matching World History Database records.
3Distinct records
1 of 1Page
1922–1922Years on this page
1922
Expanding Universe
Friedmann publishes relativistic equations that allow the universe to expand or contract
Friedmann Equations
Derives expanding-universe solutions of Einstein's field equations.
Role range: 1888-1925
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.