We show that the entry of a second firm in a horizontally differentiated market (ala Hotelling) may harm consumers as prices increase and consumer's surplus possibly decrease. We first derive the price and the consumer's surplus of a monopoly which is located at the center of the market. When a...

In this paper we characterize the existence of best choices of arbitrary binary relations over non finite sets of alternatives, according to the Generalized Optimal-Choice Axiom condition introduced by Schwartz. We focus not just in the best choices of a single set X, but rather in the best...

We model pre-investment R&D decisions in the presence of spillover effects in an option pricing framework with analytic tractability. Two firms face two decisions that are solved for interdependently in a two-stage game. The first-stage decision is: what is the optimal level of coordination...

We use geocoded administrative data from Texas on all business establishments to estimate the effects of localization economies on the spatial persistence of industrial employment for the software industry. We decompose this persistence into components arising from entry rates, firm growth, and...

The diffusion of knowledge generates positive externalities if knowledge flows increase the productivity of Research and Development (R&D) by the recipients of these flows. This paper investigates the extent to which this positive spillover effect of knowledge diffusion depends on the similarity...