IntroductionEntrepreneurship is a fundamental driver of economic evolution. It is also a distinctly spatially unevenprocess, and thus an important explanation of the uneven economic development of regions andnations. Not surprisingly, entrepreneurship is a key element of evolutionary economics...

We propose a framework that specifies the process of economic development as an evolutionary branching process of product innovations. Each product innovation provides a growth opportunity for an existing firm or a new firm, and for an existing city or a new city. One can then obtain both firm...