I don't have the data in front of me, so let's emphasize the difference between r1 and rf.

我现在手头没有具体数据，我们现在把目光转移到r1和rf的数值差上。

耶鲁公开课 - 金融市场课程节选

rf Actually, I should take that back, this is really rf-- he shows all three.

对了，我应该把那里r2改成-,他设了三个利率值。

耶鲁公开课 - 金融市场课程节选

With the government expected return, we want to make that expected return as a fourth asset-- rf we could call it r4 but I'll call it rf-- it's a special asset.

根据政府的期望收益率，我们将其作为第四种资产-,可以称之为r4，我们写成-,这是个特殊的资产。

耶鲁公开课 - 金融市场课程节选