Born
1736
Died
1813
Nationality
Italian-French
Events involving Joseph-Louis Lagrange (5)
1762
ID: 562
Joseph-Louis Lagrange develops calculus of variations into systematic theory
ID: 562
1770
ID: 575
Lagrange proves every positive integer expressible as sum of four perfect squares
ID: 575
1772
ID: 581
Lagrange develops 'Mécanique analytique' - replaces geometric proofs with pure algebraic analysis
ID: 581
1772
ID: 582
Lagrange develops systematic theory of continued fractions for Diophantine analysis
ID: 582
1788
ID: 629
Lagrange publishes completed Mécanique analytique - unifies all mechanics under algebra
ID: 629