The present paper takes a geometric approach to characterize the competitive forces behind innovation and dynamic general equilibria determination in the model of growth through creative destruction constructed by Aghion and Howitt (1992). All the essentials can be comprehended intuitively from...

Das Werk bietet dreierlei: 1. Einführung in die Methoden der Strukturanalyse; 2. Überblick über einen wichtigen Bereich der modernen Innovationsökonomik; 3. Darstellung der evolutorischen Konzepte zur Erklärung der wirtschaftlichen Realität.

We propose a simple model where large innovation waves arise from the endogenous propagation of information around sectors. Innovators of each sector invest in internal R&D and in local search for information. We show that depending on the structural parameters of the single sectors, some of the...

The paper investigates the mechanics through which novel technological principles are developed and diffused throughout an economy consisting of a technologically heterogeneous ensemble of firms. In the model entrepreneurs invest in the discovery and in the diffusion of a technological principle...