It included M Ya Suslin and P S Urysohn, in addition to Aleksandrov . However the person who made the deepest impression on Kolmogorov at this time was Stepanov who lectured to him on trigonometric series.
Ito kasama M Ya Suslin at PS Urysohn, bilang karagdagan sa Aleksandrov. Subalit ang mga tao na ginawa ang deepest impression sa Kolmogorov sa oras na ito ay Stepanov na lectured sa kanya sa trigonometriko serye.