What is Nash bargaining theory? Why do we use this concept to determine the equilibrium wage rate in the DMP model? How do the two equations em(1/j,1)=k/[(1a)(zb)] and P(Q)=b+em(1,j)a(zb) determine the equilibrium of the DMP model? That is, how do these two equations determine j and Q ? Knowing j and Q, how does the DMP model determine the unemployment rate, the vacancy rate, and output? What are the effects on the DMP model's equilibrium due to a change in posting costs; in UI benefits; in productivity; and in matching efficiency? How do these theoretical results match with data on differences in UI benefits across countries; on variations in productivity within the US; and on the behavior of the US Beveridge Curve since the Great Recession with the exception of 2020 ?.