E stands for expected value. rVresident=E[Vresident]E[Vhire], or the expected value of the resident relative to a hire. In the first formula you refer to there is also the equivalent for the counterfactual resident (rVcresident) and the counterfactual hire (rVchire).
E stands for expected value. rVresident=E[Vresident]E[Vhire], or the expected value of the resident relative to a hire. In the first formula you refer to there is also the equivalent for the counterfactual resident (rVcresident) and the counterfactual hire (rVchire).