There she began her long-standing friendship with Smirnov, who was in charge of several branches of mathematics as well as seismology, hydrodynamics and aerodynamics.
Doon siya nagsimulang kanyang matagal na pagkakaibigan sa Smirnov, na sa bayad ng maraming sanga ng matematika pati na rin ang seismology, haydrodinamika at aerodynamics.