Andrey Kolmogorov Created 2026-10-24 Updated 2026-11-05
Andrey Kolmogorov formulated the modern measure-theoretic axioms of probability in his 1933 Grundbegriffe. A probability measure assigns total mass one and countably additive weights to events. This makes probability a mathematical structure that can be used across very different random experiments.[ref]
Figure 1.
Portrait of Andrey Kolmogorov
. Konrad Jacobs; Oberwolfach Photo Collection, record 7493; permission archived by Wikimedia VRT ticket 2008042410024381. CC BY-SA 2.0 Germany, via Wikimedia Commons. Source.