To me, you are still nothing more than a little boy who is just like a hundred thousand other little boys。 And I have no need of you。 And you, on your part, have no need of me。 To you, I am nothing more than a fox like a hundred thousand other foxes。 But if you tame me, then we shall need each other。 To me, you will be unique in all the world。 To you, I shall be unique in all the world.
布莱克-斯科尔斯公式的美妙之处在于它仅依赖于一个不可观测的参数,即股票的波动率。
The joy of chemistry is in seeing the invisible become visible.