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
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