RDP 8610: Equilibrium Exchange Rates and a Popular Model of International Asset Demands: An Inconsistency Equation

\begin{array}{l} Σ_{i} a_{i} (σ_{j i} - σ_{j 1} - σ_{1 i} + σ_{1}^{2}) = - (σ_{j 1} - σ_{1}^{2}) + θ (μ_{j} - μ_{1}) & j = 2, \dots, s \end{array}