A note on András Bródy's study entitled 'Leontief's closed dynamic model'

András Bródy presents in his study three methods of finding an equilibrium solution to the closed dynamic input-output model. The one of the three that this study analyses is the classical solution recommended by Leontief. The route to a solution is through the determination of own values, which leads to the problem of a generalized eigen-value/ eigen-vector, due to the singularity of the capital matrix. Following Bródy's numerical example also shows that the equilibrium solution is only non-negative in the long term if the path of the economy follows the Neumann ray.