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On Envelope Theorems in Economics: Inspired by a Revival of a Forgotten Lecture
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Abstract
This paper studies how envelope theorems have been used in Economics, their history and also who first introduced them. The existing literature is full of them and the reason is that all families of optimal value functions can produce them. The paper is driven by curiosity, but hopefully it will give the reader some new insights.Envelope theorems; names and history; value functions