Providing the first comprehensive account of the widely unknown
cooperation and friendship between Emmy Noether and Helmut Hasse, this
book contains English translations of all available letters which were
exchanged between them in the years 1925-1935. It features a special
chapter on class field theory, a subject which was completely renewed in
those years, Noether and Hasse being among its main proponents. These
historical items give evidence that Emmy Noether's impact on the
development of mathematics is not confined to abstract algebra but also
extends to important ideas in modern class field theory as part of
algebraic number theory. In her letters, details of proofs appear
alongside conjectures and speculations, offering a rich source for those
who are interested in the rise and development of mathematical notions
and ideas. The letters are supplemented by extensive comments, helping
the reader to understand their content within the mathematical
environment of the 1920s and 1930s.