In a model of exchange with price-taking individuals, the existence of a continuum of nontrivial underemployment equilibria with walrasian prices is proved for a generic set of economies. The likelihood of the occurrence of these equilibria is higher the

In this paper the existence of unemployment is partly explained as being the result of coordination failures. It is shown that as a result of self-fulfilling pessimistic expectations, even at Walrasian prices, a continuum of equilibria results, among which an equilibrium with approximately no...

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In this paper we compare rational expectations equilibria with different degrees of information revelation through prices. These equilibria arise in a two-period exchange economy with finitely many states and signals, multiple commodities and incomplete f

Indivisible units are produced with increasing marginal costs. Under average cost, each user pays average cost. Under random priority, users are randomly ordered (without bias) and successively offered to buy at the true marginal cost. Both average cost (AC) and random priority (RP)...

The paper defines a simple tatonnement process of adjustments in prices and quantities, where excess demand results in nominal price increases and excess supply results in quantity rationing of supply at unchanged prices. Under reasonable assumptions, the process converges to a...

The paper studies equilibria for economies with imperfect competition and non-convex technologies. Following Negishi, firms maximise profits under downward-sloping perceived demand functions. Negishi's assumptions, in particular the assumption of a single monopolistic competitor in each market,...

This paper, prepared for an lEA Conference in honour of James Meade on The Economics of Partnership, analyses the rationale and prospects for using cyclical variations in Social Insurance Contributions (SIC) as a means to reconcile wage flexibility with efficient risk-sharing between capital and...

The introduction of banks that issue money and supply balances and pay out their profis as dividends is the natural modification of the model of general competitive equilibrium that encompasses monetary economies with an operative transactions technology. Monetary policy sets nominal rates of...