A simple general equilibrium model of imperfect competition is introduced with special attention given to the labour market. An extended Cournot equilibrium is defined for any money wage taken as given by the producers. Under some assumptions involuntary unemployment may arise, that is...

Competitive aggressiveness is analyzed in a simple spatial oligopolistic competition model, where each one of two firms supplies two connected market segments, one captive the other contested. To begin with, firms are simply assumed to maximize profit subject to two constraints, one related to...

Sustained endogenous growth is known to be impossible in OLG one-sector models without non-convexities and externalities, unless income is redistributed to the young generation. No redistribution proper is however necessary, as shown in two simple examples, if positive profits accruing to young...

For an industry producing a composite commodity, we propose a comprehensive concept of oligopolistic equilibrium, allowing for a parameterized continuum of regimes varying in competitive toughness. Each firm sets simultaneously its price and its quantity under two constraints, relative to its...

The paper suggests a <italic>new Keynesian</italic> model of the <italic>General Theory</italic>. A reduced form entails a diagram with three curves relating employment and the real wage, which represent the two fundamental classical postulates and the principle of effective demand. This diagram illustrates better than <italic>IS-LM</italic> the...

In Keynes’ beauty contest, agents have to choose actions in accordance with an expected fundamental value and with the conventional value expected to be set by the market. In doing so, agents respond to a fundamental and to a coordination motive respectively, the prevalence of either motive...

Free entry equilibria are usually characterized by the zero profit condition. We plead instead for a strict application of theNash equilibriumconcept to a symmetric simultaneous game played by actual and potential entrants, producing under decreasing average cost. Equilibrium is then typically...

The paper aims to make a claim for a retrospective approach to history of economic analysis. While not denying that a contextualised methodology might be useful, or maybe even imperative in some cases, the history of economic analysis we favour should consist in the inquiry of ‘historic’...