Pisot and Salem Numbers

the attention of The publication of Charles Pisot''s thesis in 1938 brought to the mathematical community those marvelous numbers now known as the Pisot numbers (or the Pisot-Vijayaraghavan numbers). Although these numbers had been discovered earlier by A. Thue and then by G. H. Hardy, it was Pisot''s result in that paper of 1938 that provided the link to harmonic analysis, as discovered by Raphae...