'''Leonhard Paul Euler''' (pronounced ˈœɪlɐ}}; (OI-LER) April 15, 1707 – was a pioneering Swiss [[mathematics|mathematician]] and [[physics|physicist]] who spent most of his life in Russia and Germany. | '''Leonhard Paul Euler''' (pronounced ˈœɪlɐ}}; (OI-LER) April 15, 1707 – was a pioneering Swiss [[mathematics|mathematician]] and [[physics|physicist]] who spent most of his life in Russia and Germany. |