Heisenberg attempts to justify his axiomatics and to show that it is less arbitrary than suspected by Pauli.
Sans titrePauli makes some remarks on Heisenberg's "Hilbert-space II", and replies to Heisenberg's criticism of Landeau's work.
Sans titrePauli gives reasons why his attitude to the Lee model remains positive.
Sans titrePauli replies to three questions of Jordan: 1) on heat conductivity, 2) on his possible visit to Hamburg, 3) on a problem which Delbrück might be able to answer.
Sans titreKällén attempts to clarify for himself the contents of the papers by Landau and his collaborators.
Sans titrePauli writes of his going to the conference in Pisa where he will discuss Källén's letter. He talks about Landau's papers whose general gist is like that of Källén's and about his doctoral student Enz and his work.
Sans titrePauli comments on Heisenberg's formulation of field quantization and some questions on specified points.
Sans titrePauli writes of the meeting in Pisa and of talks with Heisenberg, Schwinger and Gell-Mann.
Sans titrePauli writes about the congress in Pisa and his talks with Heisenberg. He talks about the Russian physicists. He recommends "Nuovo Cimento" instead of Phys. Rev. He talks about the doubts of Lehmann, Heisenberg's assistant and Heisenberg's work.
Sans titreHeisenberg replies to a question by Pauli concerning certain equations in his last letter.
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