TY - BOOK AU - Wright,Joseph Edmund TI - Invariants of quadratic differential forms / SN - 9780486497686 U1 - 515.37 PY - 2013/// CY - 2013New York : PB - Dover Publications, Inc., KW - FORMAS DIFERENCIALES N2 - 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 ER -