1 “... were exchanged between them in the years 1925-1935. It features a special chapter on class field theory...”

2 Table of Contents: “... Work -- 3. Reminiscing Helmut Hasse -- 4. Reciprocity Laws for Power Residues -- 5. Class Field Theory...”

3 “... number theory, in particular class field theory. Their correspondence admits a view of the ideas which...”

4 “... and number theory, in particular class field theory. Details of proofs appear alongside with conjectures...”