CramérbecameinterestedintherigorousmathematicalformulationofprobabilityinworkoftheFrenchandRussianmathematicianssuchasPaulLévy,SergeiBernstein,andAleksandrKhinchinintheearly1930s,butinparticulartheaxiomaticapproachofKolmogorov.
Generate a sentence using the above characters:
Cramér became interested in the rigorous mathematical formulation of probability in work of the French and Russian mathematicians such as Paul Lévy , Sergei Bernstein , and Aleksandr Khinchin in the early 1930s, but in particular the axiomatic approach of Kolmogorov .