closed (in geometry and graph theory) A continuous curve is closed if it has no ends or, in other words, if it begins and ends at the same point. Likewise a walk, trail, or path which finishes at its starting point is closed.
closed
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。