
好词典

源自拉丁语 'convexus'(弯曲的)+ 后缀 '-ity',17世纪进入英语。
❶ 指物体表面向外凸起的形状或状态,与凹面相反。常用于描述几何形状、镜片或金融曲线的特性。
“The convexity of the lens helps to focus light rays.”
(镜片的凸面形状有助于聚焦光线。)
“The artist emphasized the convexity of the sculpture's curves.”
(艺术家强调了雕塑曲线的外凸特征。)
positive convexity — 金融术语,指债券价格随利率下降而上升的幅度大于利率上升时的下降幅度,表示有利的风险收益特性。
“Bonds with positive convexity are preferred by investors in volatile markets.”
(在波动市场中,投资者更青睐具有正凸性的债券。)