—— 请按键盘 空白键 开始游戏 ——

布莱克-斯科尔斯模型的美妙之处在于它将期权定价问题简化为估计几个关键参数,尤其是波动率。
The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.
The Erdős discrepancy problem fascinated me because it was so simple to state yet so deep in its implications.