We study a class of symmetric, quasi-homothetic preferences that result in demands logarithmic in own prices when these have a negligible impact on aggregate price indices (as in monopolistic competition models). Thus marginal revenues are computationally friendly, and decreasing whenever...

We study a class of symmetric, quasi-homothetic preferences that result in demands logarithmic in own prices when these have a negligible impact on aggregate price indices (as in monopolistic competition models). Thus marginal revenues are computationally friendly, and decreasing whenever...

We propose a novel approach to study competition among platforms. In particular, we consider representative consumer's preferences over the services platforms provide and the commodities they intermediate. Platforms are assumed to be large, intermediating a variety of commodities offered by...