Notes on on tensor notation.

Corrections for "The theory of relativity".

Notes on Application of the renormalization group to improvement of perturbation theory formulae / Bogolyubov, Nikolaj Nikolaevich ; Shirkov, D V ; In: Dokl. Akad. Nauk SSSR : 103 (1955) no.3, pp.391-394.

Notes, probably on Heisenberg's manuscript "2) Boseteilchen der Ruhmasse Null".

Notes and calculations on an article by Heisenberg: "Lee Model and Quantisation of non-linear field equations", Nucl. Phys 4, 532, 1957.

Some mathematical corrections to a manuscript from Gürsey.

Notes for the conference on Rydberg.

Notes for a discussion on the influence of archetypes in Kepler's theory.

Notes for the paper on the influence of archetypes in Kepler's theory.