She became interested in the theory of partial differential equations due to the influence of Petrovsky as well as the book by Hilbert and Courant . Being a talented student, the authorities often ignored absences at compulsory lectures while she attended research seminars including the algebra seminars of Kurosh and Delone and the seminar on differential equations headed by Stepanov, Petrovsky, Tikhonov, Vekua and their students and colleagues.
Siya ay naging interesado sa teorya ng bahagyang kaugalian equation dahil sa impluwensiya ng Petrovsky pati na rin ang mga libro sa pamamagitan ng Hilbert at Courant. Bilang ng mahuhusay na mag-aaral, ang mga awtoridad ng madalas pinansin absences at sapilitang lektura habang siya pumasok sa research seminar kasama na ang algebra seminar ng Kurosh at Delone at ang mga pantas-aral sa kaugalian equation ulo ng Stepanov, Petrovsky, Tikhonov, Vekua at ang kanilang mga mag-aaral at kasamahan.