Pauli believes that the introduction of singulary density matrices is not the physically correct way to a solution.
Sin títuloHeisenberg talks of more progress about e$^{2}$(h.c.). He also writes of a solution of the Schrödinger equation in the present theory of holes by a power-series of e$^{2}$(h.c.).
Sin títuloPauli suggests some physical properties of neutrino and criticizes de Broglie's idea of light quantum as two neutrinos.
Sin títuloThis letter from Casimir is accompagnied by an offprint by Casimir and B L van der Waerden "Algebraischer Beweis der vollständigen Reduzibilität der Darstellungen halbeinfacher Liescher Gruppen" (in: Math. Ann. : 111 (1935), pp.1-12). The letter contains a short reference to mathematical problems, experimental results on supraconductivity and personal remarks on Kronig.
Sin títuloPauli writes about possible candidates for an assistantship in his institute. He reports on the New York physics meeting.
Sin títuloHeisenberg writes on a typical difference betwen quantum electrodynamics and Fermi's Beta-Decay theory. The existence of cosmic ray showers can possibly be explained by Fermi's theory. He gives numerical calculations.
Sin títuloPauli asks for clarification of beta-decay Hamiltonian.
Sin títuloPauli writes on some afterthoughts about Heisenberg's letter.
Sin títuloHeisenberg talks about some plausibility arguments against Pauli's objections and about a possible solution for the interaction of neutrinos in the case of many particles. He writes about an application of a kind of Thomas-Fermi-method for the state of lowest energy. From this interaction the production of showers can possibly follow.
Sin títuloPauli writes that his view that Delta-type interaction between more than two neutrinos must lead to infinities was influenced by a paper by Thomas (Phys. Rev. 47,903). This does not affect Pauli's and Heisenberg's case.
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