The unplublished writings of Helmut Hasse are kept at the Handschriftenabteilung of the University of Gottingen. Hsse had an extensive correspondence, he liked ... » 

The unplublished writings of Helmut Hasse are kept at the Handschriftenabteilung of the University of Gottingen. Hsse had an extensive correspondence, he liked to exchange mathematical ideas, results and methods freely with his colleagues. This volume is largely based on the letters concerning the Brauer-Hasse-Noether Theorem in the theory of algebras. It covers the years around 1931. «