Heterogeneous Firms
Melitz selection in the CES framework: firm exit reduces curvature, Herfindahl increases on exit, and cascade feedback through the extensive margin.
Impact Score
Score Reasoning
- Importance
- Connects CES curvature to Melitz firm heterogeneity and selection, extending the framework to the extensive margin. Well-connected but not a core spine result.
- Novelty
- Embedding Melitz selection in CES curvature framework is a useful new connection, particularly the Herfindahl-curvature link through firm exit.
- Quality
- Good cross-links to firm-scope, entry-exit-dynamics, secular-equation. Clear Melitz integration.