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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Indifference curve ： ウィキペディア英語版 Indifference curve In microeconomic theory, an indifference curve is a graph showing different bundles of goods between which a consumer is ''indifferent.'' That is, at each point on the curve, the consumer has no preference for one bundle over another. One can equivalently refer to each point on the indifference curve as rendering the same level of utility (satisfaction) for the consumer. In other words an indifference curve is the locus of various points showing different combinations of two goods providing equal utility to the consumer. Utility is then a device to represent preferences rather than something from which preferences come. The main use of indifference curves is in the representation of potentially observable demand patterns for individual consumers over commodity bundles. There are infinitely many indifference curves: one passes through each combination. A collection of (selected) indifference curves, illustrated graphically, is referred to as an indifference map. == History == The theory of indifference curves was developed by Francis Ysidro Edgeworth, who explained in his book "Mathematical Psychics: an Essay on the Application of Mathematics to the Moral Sciences,” 1881,〔http://onlinebooks.library.upenn.edu/webbin/book/lookupid?key=olbp34052〕 the mathematics needed for its drawing; later on, Vilfredo Pareto was the first author to actually draw these curves, in his book "Manual of Political Economy," 1906;〔https://archive.org/details/manualedieconomi00pareuoft〕〔http://www.policonomics.com/indifference-curves/〕 and others in the first part of the 20th century. The theory can be derived from William Stanley Jevons's ordinal utility theory, which posits that individuals can always rank any consumption bundles by order of preference.〔http://www.policonomics.com/william-stanley-jevons/〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Indifference curve」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.