Other important work was on Lie groups, and on this topic he wrote the first Russian text Theory of Lie Groups (1940), He also did important work on the inverse Galois problem and the theory of resolvants.
Iba pang mga mahalagang trabaho ay humiga / magsinungaling sa grupo, at sa paksang ito siya ang unang wrote Russian teksto ng teorya ng humiga / magsinungaling Groups (1940), Siya rin ay mahalaga sa trabaho ang kabaligtaran Galois problema at ang teorya ng resolvants.