Distribution of income and aggregation of demand

摘要: We show that, under certain regularity conditions, if the distribution of income is price independent and satisfies a condition on shape its graph, then total market demand, F(p), monotone; i.e., given two positive prices, p q, one has (p−q) (F(p)−F(q)) < 0. These results allow for density functions increasing some intervals, like unimodal distributions or even densities with more than peak. Similar assumptions endowments, yield restricted monotonicity property aggregate excess where, now, wealth determined by prices. This guarantees uniqueness stability equilibrium Walrasian pure exchange economy.