Title: Invariants of quadratic differential forms
Description: "This classic monograph by a mathematician affiliated with Trinity College, Cambridge, offers a brief account of the invariant theory connected with a single quadratic differential form. A historical overview is followed by considerations of the methods of Christoffel and Lie as well as Maschke's symbolic method and explorations of geometrical and dynamical methods. 1960 edition"--
Subjects: Differential forms, MATHEMATICS / Geometry / Differential