La Grange.From a Bust in the Library of the Institute of France. Under the Superintendance of the Society for the Diffusion of Useful Knowledge.
[London, Published by Charles Knight, Pall Mall East.] [n.d. c.1800.]
Stipple. 272 x 191mm. 10¾ x 7½". Scrap biography stuck down over publication line.
Joseph-Louis Lagrange (1736-1813) was a mathematician and astronomer born in Turin. His main scientific contributions are as one of the creators of the calculus of variations, deriving the Euler-Lagrange equations for extrema of functionals. He also invented a method of solving differential equations, and his treatise "Theorie des fonctions analytiques" laid down some of the foundations of group theory, anticipating Galois. He transformed Newtonian mechanics into what is now known as Lagrangian mechanics, which exhibits the mechanical "principles" as simple results of the variational calculus.
Ex Norman Blackburn Collection.
[Ref: 18728] £45.00