关于基菲茨关于人口混合的定理的注解。

Janasamkhya Pub Date : 1993-06-01

A K Bhattacharyya

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引用次数: 0

摘要

“Keyfitz表明，如果人口中有n个亚群具有恒定的指数增长率，那么总体增长率具有正导数，因此它将继续增长。但在这份报告中，我们表明，如果指数增长率随时间变化，那么总体增长率不一定会增加。”

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A note on Keyfitz's theorem on the mixture of population.

"Keyfitz showed [that] if there are n sub groups of a population having constant exponential growth rate then the overall growth rate has positive derivative and hence it will go on increasing. But in this note we show that if the exponential growth rate is taken to be varying over time then the overall growth rate will not necessarily be increasing."

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Janasamkhya

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