research on the connections between agglomeration and innovation. The authors first describe the conceptual distinctions … between invention and innovation. They then discuss how these factors are frequently measured in the data and note some …, industrial diversity) that theoretical and empirical work link to innovation, and they discuss factors that help sustain these …

framework that contains multiple innovation sizes, multi-product firms, and entry/exit. Firms invest in exploration R&D to … regularities regarding innovation and growth differences across the firm size distribution. We also incorporate patent citations …