At my maximum, I'll put a hat over it to indicate this is the argmax; at my maximum I'm going to set this thing equal to 0.

给每个最大值都标注上一个帽来,在最大值处导数方程等于0

耶鲁公开课 - 博弈论课程节选

So again, they both know that someone in the room has a pink hat on their head: it is mutual knowledge that there's a pink hat in the room.

但是他们都知道,至少有一个人戴着粉色帽子,至少有一顶粉色帽子是相互知识

耶鲁公开课 - 博弈论课程节选

And h with the carrot or the hat here, well, that carrot or hat tell us it must be an operator, and this is called the Hamiltonian operator.

而且带帽的H，好，这个帽告诉我们它肯定是一个算符，这个被称为哈密顿算符。

麻省理工公开课 - 化学原理课程节选