Agents are heterogeneous with respect to trading strategies in particular depending on their past decisions. Given the heterogeneous expectations about future prices (as detailed in section 3.2), heterogeneous demand for assets are formed (eq. 7 and 8). As a result a market price materializes.2. The market price is computed for the case where the excess aggregate demand is zero, i.e. the sum of individual demand (cf. eq. 7) for all j agents . In the simulations this is solved numerically. In Matlab - the software we used - you can use the method "fzero" to do so (which computes the root of a non-linear function).3. The balance sheets are detailed in equations 1-3. The heterogeneous nature of the balance sheets - once again - owes to the fact that agents have different trading strategies (cf. the first point). Moreover, the different trading strategies not only have an impact on the asset side of the balance sheet (left side) but also on the decomposition of the liabilities side (right side) - in particular the amount of debt held. As detailed in eq. 15 the latter is given by the minium of demanded (eq. 18) and supplied debt (cf. eq. 21).
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