作者: X. Gabaix
关键词: Zipf's law 、 Econometrics 、 City size 、 Rank-size distribution 、 Gibrat's law 、 Power law 、 Distribution (economics) 、 Economics 、 Constraint (information theory) 、 Class (set theory)
摘要: Zipf ’s law is a very tight constraint on the class of admissible models local growth. It says that for most countries size distribution cities strikingly fits power law: number with populations greater than S proportional to 1/S. Suppose that, at least in upper tail, all follow some growth process (this appears be verified empirically). This automatically leads their converge law.