文章基本信息

标题：A notion of sufficient input
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作者：Bertrand Crettez ; Philippe Michel
期刊名称：Economics Bulletin
电子版ISSN：1545-2921
出版年度：2003
卷号：4
出版社：Economics Bulletin
摘要：In this paper, we study a notion of sufficient input, i.e. input that allows to produce at least one unit of output when the other inputs are fixed at any positive level. We show that such an input allows to produce any positive amount of production. The main property of sufficient inputs is as follows. A input is sufficient if and only if the unit cost goes to zero when its price goes to zero.