Swiss mathematician particularly noted for his full development of integral calculus and for his theories of complex numbers, logarithmic and trigonometric functions, and lunar motion.

• 欧拉，莱奥哈尔德1707－1783瑞士数学家，尤其他对微积分的开创性贡献，以及他的复数、对数、三角函数和月球运动等理论而闻名于世