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摘要翻译：
对于资产价格为指数Levy过程的金融市场，在投资策略可能存在凸约束的情况下，我们给出了许多非免费午餐型条件的等价性。一般的信息如下：如果在这些模型中存在任何一种免费午餐，它必须是最惊人的类型，产生越来越多的Ealth。此外，我们将前一个问题与数字投资组合的存在性联系起来，这既是因为它在指数Levy模型中特别清楚地说明了它，也是在一般半线性模型中获得非免费午餐等价的类比的第一步。
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英文标题：
《No-Free-Lunch equivalences for exponential Levy models》
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作者：
Constantinos Kardaras
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最新提交年份：
2008
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分类信息：
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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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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英文摘要：
We provide equivalence of numerous no-free-lunch type conditions for financial markets where the asset prices are modeled as exponential Levy processes, under possible convex constraints in the use of investment strategies. The general message is the following: if any kind of free lunch exists in these models it has to be of the most egregious type, generating an increasing ealth. Furthermore, we connect the previous to the existence of the numeraire portfolio, both for its particular expositional clarity in exponential Levy models and as a first step in obtaining analogues of the no-free-lunch equivalences in general semimartingale models.
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PDF链接：
https://arxiv.org/pdf/0803.2169
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