General Investigations of Curved Surfaces of 1827 And 1825; Tr. With Notes And a Bibliography by James Caddall Morehead And Adam Miller Hiltebeitel.

Long regarded as a masterpiece in content and form, this work defines the concept of surface curvature and presents the important theorem stating that the "Gauss curvature" is invariant under arbitrary isometric deformation of a curved surface. This edition of Gauss's classic features a new introduction, bibliography, and notes by science historian Peter Pesic. 1902 edition.