#lagrange @Lagrange Official $LA

Joseph-Louis Lagrange was an Italian mathematician and physicist of French nationality in the 18th century. Mathematically, he founded Lagrangian mechanics, improved the calculus of variations, and proposed the Lagrange mean value theorem; in physics, he made significant contributions in areas such as celestial mechanics. His work "Analytical Mechanics" has had a profound influence and is regarded as the "Bible of Mechanics," making him an important figure in the history of science in the 18th century.