Gabriel's horn The surface of revolution formed by rotating the curve y = 1/x for x > 1 about the x-axis, which has seemingly paradoxical properties. The volume within the surface is finite, but the surface area is infinite.
Gabriel's horn
数学辞典收录了4151条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。