← Back The Theory of Differential Equations (vol. 5): Part IV: Partial Differential Equations
The Theory of Differential Equations (vol. 5): Part IV: Partial Differential Equations

The Theory of Differential Equations (vol. 5): Part IV: Partial Differential Equations

Description

Cantwell Introduction to Symmetry Analysis p. 3, PDF pp. 47:

In his 1906 treatise on The Theory of Differential Equations [vols. 5 & 6] Andrew Forsyth devotes several chapters to Lie groups and Bäcklund transformations. It is a fact, however, that shortly thereafter, Lie’s ideas fell into obscurity and remained so until soon after World War II.

Grattan-Guinness PDF p. 696fn1 cites "Forsyth Equations , 5 (1906), ch.6 [PDF pp. 229ff.]" regarding "Cauchy's procedure", "a version of what today is usually called 'the method of characteristics'" (ibid. PDF p. 697).

Cauchy-Kovalevskaya theorem discussed in ch. 2 (DjVu p. 50)