Pauli replies to Heisenberg's letter of the 16 December and discusses the formalism and correction of a mistake Pauli made. He writes on group theoretical considerations.
Sans titreHeisenberg states the points on which he and Pauli agree. He asks Pauli's view on several other points.
Sans titreLüders corrects his letter of 16.12.57 : Pauli did overlook an exchange relation; Lüders lists all possibilities.
Sans titreHeisenberg puts a question about the transformations of two continuous groups in his "electrical" theory. If this is solved, the problem of strange particles leptons can be tackled.
Sans titrePauli talks about the logical possibility of getting particles with mass different of zero in a world with $\gamma_{s}$-invariance and hints at another "unconventional" solution of the problem.
Sans titreFierz briefly replies to Pauli's New Year letter.
Sans titreHeisenberg disagrees with Pauli's letter and gives a new exposition of the relation between $\psi$* and $\psi$+.
Sans titreHeisenberg comments on his own last letter, in particular on the new formalism he suggested.
Sans titreKällén writes on further doubts as regards the Heisenberg model.
Sans titrePauli discusses on invariance of the relativistic wave equation.
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