Thie paper proves the existence of a symmetric equilibrium with multiproduct firms using a nested logit model of demand. The demand model is parametrized by two variable which characterize different dimensions of preference variety. These reflect intragroup heterogeneity and intergropu...

There is a growing interest in using the discrete choice approach to study oligopolistic competition under product differentiation, and a prominent discrete choic model is the multinomial logit. Here we analyze various aspects of the logit in this context. We first show that the predictions of...

There is a growing interest in using the discrete choice approach to study oligopolistic competition under product differentiation, and a prominent discrete choic model is the multinomial logit. Here we analyze various aspects of the logit in this context. We first show that the predictions of...

Modelle zur Auswahl diskreter Alternativen (discrete choice modeis) stellen etne spezielle Situation der ökonomischen Nachfrageanalyse dar. Die verwendeten Modelle-müssen deshalb den nachfragetheoretischen Rahmen berücksichtigen. Lä3t-man für das ausgewählte Gut beliebige Mengen zu, so...