In 1930 Weyl left his chair in the ETH in Zurich to take up a chair at Göttingen and in 1931 Hopf was approached to see if he was interested in accepting this chair.
Sa 1930 Weyl kaliwa kanyang upuan sa ETH Zurich sa mag-up ng isang upuan sa Gottingen at sa 1931 Hopf ay approached upang makita kung siya ay interesado sa pagtanggap na ito chair.