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In microeconomics, the Bertrand–Edgeworth model of price-setting oligopoly looks at what happens when there is a homogeneous product (i.e. consumers want to buy from the cheapest seller) where there is a limit to the output of firms which are willing and able to sell at a particular price. This differs from the Bertrand competition model ...
"The Kinky Oligopoly Demand and Rigid Prices" The Journal of Political Economy Vol. 55, pp. 432-449. Stigler, G. 1978. "The literature of economics: the case of the kinked oligopoly demand curve" Economic Inquiry Vol. 16, pp. 185–204. Sweezy, P. 1939. "Demand Under Conditions of Oligopoly" The Journal of Political Economy Vol. 47, pp. 568-573.
[1] [2] As a result of their significant market power, firms in oligopolistic markets can influence prices through manipulating the supply function. Firms in an oligopoly are mutually interdependent, as any action by one firm is expected to affect other firms in the market and evoke a reaction or consequential action. [3]
The Bertrand model has similar assumptions to the Cournot model: Two firms; Homogeneous products; Both firms know the market demand curve; However, unlike the Cournot model, it assumes that firms have the same MC. It also assumes that the MC is constant. The Bertrand model, in which, in a game of two firms, competes in price instead of output ...
In oligopoly theory, conjectural variation is the belief that one firm has an idea about the way its competitors may react if it varies its output or price. The firm forms a conjecture about the variation in the other firm's output that will accompany any change in its own output.
Oligopoly: The number of enterprises is small, entry and exit from the market are restricted, product attributes are different, and the demand curve is downward sloping and relatively inelastic. Oligopolies are usually found in industries in which initial capital requirements are high and existing companies have strong foothold in market share.
Over the rest of the decade Sweezy wrote prolifically on economics-related topics, publishing some 25 articles and reviews. [3] Sweezy did pioneering work in the fields of expectations and oligopoly in these years, introducing for the first time the concept of the kinked demand curve in the determination of oligopoly pricing. [3]
In these alternative models of oligopoly, a small number of firms earn positive profits by charging prices above cost. Suppose two firms, A and B, sell a homogeneous commodity , each with the same cost of production and distribution , so that customers choose the product solely on the basis of price.