The Topos of Music, Tome 4 : Roots. Appendices
2nd edition

This is the fourth volume of the second edition of the now classic book The Topos of Music. The author presents appendices with background material on sound and auditory physiology ; mathematical basics such as sets, relations, transformations, algebraic geometry, and categories ; complements in physics, including a discussion on string theory ; and tables with chord classes and modulation steps.