However, after the end of the war, there were a number of further important appointments to Frankfurt which built up an impressive mathematics department there. Epstein was appointed in 1919, Dehn in 1921 and Siegel in 1922.
Gayunman, matapos ang katapusan ng digmaan, mayroong isang bilang ng mga karagdagang mahalagang tipanan sa Frankfurt na kung saan binuo up ang isang kahanga-matematika departamento doon. Epstein ay hihirangin sa 1919, Dehn sa 1921 at Siegel sa 1922.