V2EX convexity

Convexity

发音 Pronunciation

/knvksti/

释义 Definition

凸性;凸出的状态或性质。指物体表面向外弯曲隆起的特征,与"凹"相对。在数学和金融领域也有专门的含义,数学中指函数的凸性质,金融中指债券价格与收益率之间的非线性关系。

例句 Examples

The convexity of the lens allows it to focus light onto a single point.
透镜的凸性使其能够将光线聚焦到一个点上。

In bond pricing, convexity measures how the duration of a bond changes as interest rates fluctuate, providing a more accurate estimate of price sensitivity than duration alone.
在债券定价中,凸性衡量的是债券久期随利率波动而变化的程度,比单独使用久期能更准确地估算价格敏感性。

词源 Etymology

源自拉丁语 convexus,意为"拱形的、向外弯曲的",由前缀 **con-**(一起)和 vehere(携带、运送)构成,字面意思是"聚拢在一起隆起"。该词经由中世纪拉丁语 convexitas 进入英语,最早用于描述几何形状的凸出特征,后来逐渐扩展到数学分析和金融等领域。

相关词汇 Related Words

文学与学术引用 Literary & Academic References

  • 欧几里得《几何原本》(Elements)中对凸多边形的讨论,是 convexity 概念最早的数学应用之一。
  • 在经济学家纳西姆尼古拉斯塔勒布(Nassim Nicholas Taleb)的著作《反脆弱》(Antifragile)中,convexity 被用来阐述系统在波动中获益的核心概念。
  • 弗兰克法博齐(Frank Fabozzi)的《固定收益分析》(Fixed Income Analysis)中,convexity 是债券定价与风险管理的关键术语。
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