当且仅当所有投资者都持有均值-方差有效的投资组合时,市场组合才是有效的。
I am just another dot in the universe.
The act of writing requires a constant plunging back into the shadow of the past where time hovers ghostlike.
Innovation is not just about technology. It's about people, culture, and creating an environment where ideas can flourish.
The development of quantum computing will have profound implications for cryptography and cybersecurity.
"We think we’re the ones who notice things, but really it’s the things that notice us."