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几个可观察的变量。
Art is contemplation. It is the pleasure of the mind which searches into nature and which there divines the spirit of which nature herself is animated.
I think the best thing you can do is to be grateful for what you have.
The power of the Web is in its universality. Access by everyone regardless of disability is an essential aspect.
Success is not about fame and money. It's about happiness and fulfillment.