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。
Innovation is the key to staying ahead in a competitive industry.
"There is no such thing as a happy ending. There are just good places to stop."
The moment the child is born, stimuli begin to play upon him.
英国设计意味着一只脚在温莎城堡,另一只在硅谷。