Sonnenschein-Mantel-Debreu Theorem: Aggregate Demand Limits
Sonnenschein-Mantel-Debreu theorem analysis shows why rational individual demand does not guarantee stable, unique, or well-behaved aggregate demand.
Excess Demand
Stability of General Equilibrium: Price Convergence
Stability of general equilibrium explains when price adjustment converges toward market clearing and when cross-market feedback prevents convergence.
Excess Demand Function: Market Pressure
Excess demand function analysis measures shortage, surplus, and market-clearing pressure across connected markets in general equilibrium.
Tatonnement Process: Price Adjustment Toward Equilibrium
Tatonnement process analysis explains how prices adjust to excess demand and why equilibrium stability requires more than market-clearing existence.
Walras law: Market Excess Demands Balance
Walras law shows why the value of excess demand across all markets must balance when agents obey budget constraints.