There are a few generally accepted rules that apply to most Latin abbreviations. The major style manuals (MLA, APA and Chicago) agree that Latin abbreviations should be kept out of the main body of a text-that is, they should not appear in ordinary sentences within ordinary paragraphs.
Efficient-market hypothesis. Efficient-market hypothesis (EMH) is a theory in financial economics that states that an asset's prices fully reflect all available information.
Such markets are allocatively efficient, as output will always occur where marginal cost is equal to marginal revenue (MC = MR). But perfectly competitive markets are not necessarily productively efficient as output will not always occur where marginal cost is equal to average cost (MC = AC).