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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 Fundamental theorem of asset pricing ： ウィキペディア英語版 Fundamental theorem of asset pricing The fundamental theorems of arbitrage/finance provide necessary and sufficient conditions for a market to be arbitrage free and for a market to be complete. An arbitrage opportunity is a way of making money with no initial investment without any possibility of loss. Though arbitrage opportunities do exist briefly in real life, it has been said that any sensible market model must avoid this type of profit.〔Pascucci, Andrea (2011) ''PDE and Martingale Methods in Option Pricing''. Berlin: Springer-Verlag〕 The first theorem is important in that it ensures a fundamental property of market models. Completeness is a common property of market models (for instance the Black–Scholes model). A complete market is one in which every contingent claim can be replicated. Though this property is common in models, it is not always considered desirable or realistic.〔 ==Discrete markets== In a discrete (i.e. finite state) market, the following hold:〔 #The First Fundamental Theorem of Asset Pricing: A discrete market, on a discrete probability space (Ω, $\backslash scriptstyle\; \backslash mathcal$, $\backslash scriptstyle\; \backslash mathcal$), is arbitrage-free if, and only if, there exists at least one risk neutral probability measure that is equivalent to the original probability measure, ''P''. #The Second Fundamental Theorem of Asset Pricing: An arbitrage-free market (S,B) consisting of a collection of stocks ''S'' and a risk-free bond ''B'' is complete if and only if there exists a unique risk-neutral measure that is equivalent to ''P'' and has numeraire ''B''. 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「Fundamental theorem of asset pricing」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.