Used with
permission of Maiken Naylor, University at Buffalo, Buffalo, NY, USA,
http://ublib.buffalo.edu/libraries/units/sel/exhibits/stamps
Joseph-Louis Lagrange (1736-1813) worked in analysis, number theory, and celestial mechanics. He succeeded Euler at the Academy of Science in Berlin, but then moved on to the Paris Academy of Science. He was a co-founder of the Ecole Polytechnique, where he taught analysis. His major work is Mecanique analytique, applying analytical methods to the subject of mechanics.