Existence and multiplicity

Multiple equilibria? Multiplicity in a trading economy and the Sonnenschein-Debreu-Mantel point of view. Sufficient conditions for uniqueness. The point of view of differential topology (Poincaré-Hopf). The equilibrium correspondence graph.

Documents and media

Speaker(s)

Roger Guesnerie

Events

General equilibrium : a systemic viewpoint

The Walrasian perspective of general equilibrium

The model

From Adam Smith to Walras

Existence theorems

Walras and economic engineers

Existence and multiplicity

The Walras correspondence graph

The market as algorithm

Walras' trial and error

Market and welfare

Walras, liberal socialist

The generality in glory

General equilibrium and imperfect competition

The difficulties of generality

From Walras to Arrow-Debreu

The dead ends of generality

Computable general equilibrium models

General balance and specific models

Walrasian macroeconomics

A plea for an intermediate level of generality

Sraffa and Debreu

The blind spots of general equilibrium

The Sraffa review

See also