Relationships between economic theory variables and mathematical instruments for assessing competition conditions and market power
Palavras-chave:
Competition conditions, market power, market concentration, competitive marketsResumo
The sole existence of a market does not guarantee the maximum level of efficiency and social welfare it can provide through a competitive structure. As a result, a set of theoretical relationships and mathematical instruments have been developed to measure how far existing markets are from being competitive; as well as how much power firms have for setting prices and earn more than they would do in competitive markets. In this line, the current paper discusses and integrates diverse theoretical relationships and mathematical instruments underlying the assessment of competition conditions and market power and exhibits how the estimation of these instruments can be simplified to require only two variables: market shares and the price elasticity of demand.
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