英文标题:
《A new perspective on the fundamental theorem of asset pricing for large
financial markets》
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作者:
Christa Cuchiero, Irene Klein, Josef Teichmann
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最新提交年份:
2015
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英文摘要:
In the context of large financial markets we formulate the notion of \\emph{no asymptotic free lunch with vanishing risk} (NAFLVR), under which we can prove a version of the fundamental theorem of asset pricing (FTAP) in markets with an (even uncountably) infinite number of assets, as it is for instance the case in bond markets. We work in the general setting of admissible portfolio wealth processes as laid down by Y. Kabanov \\cite{kab:97} under a substantially relaxed concatenation property and adapt the FTAP proof variant obtained in \\cite{CT:14} for the classical small market situation to large financial markets. In the case of countably many assets, our setting includes the large financial market model considered by M. De Donno et al. \\cite{DGP:05} and its abstract integration theory. The notion of (NAFLVR) turns out to be an economically meaningful \"no arbitrage\" condition (in particular not involving weak-$*$-closures), and, (NAFLVR) is equivalent to the existence of a separating measure. Furthermore we show -- by means of a counterexample -- that the existence of an equivalent separating measure does not lead to an equivalent $\\sigma$-martingale measure, even in a countable large financial market situation.
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中文摘要:
在大型金融市场的背景下,我们提出了“无风险消失的渐进免费午餐”(NAFLVR)的概念,在此概念下,我们可以证明资产数量(甚至不可数)无限的市场中资产定价基本定理(FTAP)的一个版本,例如债券市场中的情况。我们在Y.Kabanov{kab:97}所规定的可容许投资组合财富过程的一般环境下,在一个相当宽松的连接属性下工作,并将在{CT:14}中获得的FTAP证明变量用于经典的小市场情况,以适应大金融市场。对于数量众多的资产,我们的设置包括M.De Donno等人考虑的大型金融市场模型及其抽象积分理论。(NAFLVR)的概念被证明是一个经济上有意义的“无套利”条件(尤其是不涉及弱-$*$-闭包),并且,(NAFLVR)相当于一个分离度量的存在。此外,我们通过一个反例表明,即使在可数的大型金融市场情况下,等价分离测度的存在也不会导致等价的$\\sigma$-鞅测度。
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分类信息:
一级分类:Quantitative Finance 数量金融学
二级分类:Mathematical Finance 数学金融学
分类描述:Mathematical and analytical methods of finance, including stochastic, probabilistic and functional analysis, algebraic, geometric and other methods
金融的数学和分析方法,包括随机、概率和泛函分析、代数、几何和其他方法
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一级分类:Mathematics 数学
二级分类:Probability 概率
分类描述:Theory and applications of probability and stochastic processes: e.g. central limit theorems, large deviations, stochastic differential equations, models from statistical mechanics, queuing theory
概率论与随机过程的理论与应用:例如中心极限定理,大偏差,随机微分方程,统计力学模型,排队论
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一级分类:Quantitative Finance 数量金融学
二级分类:Pricing of Securities 证券定价
分类描述:Valuation and hedging of financial securities, their derivatives, and structured products
金融证券及其衍生产品和结构化产品的估值和套期保值
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