Corrections for "The theory of relativity".

Some mathematical corrections to a manuscript from Gürsey.

Notes on a book by Cyril Bailey. Ancient Greece, mathematics.

Equations to be made on slides. Regularization, vacuum polarization, spin zero particles.

Notes on Lorentz groups.

Excerpts by W. Pauli from a book by August Pauly.

Notes and calculations on spherical spinning.

Notes on Democrit. Ancient Greece, mathematics.

German translation of a paragraph by J. Kepler.