semi-metric One of the conditions for a distance measure d to be a metric is the triangle inequality. If this condition is relaxed, then d is said to be a semi-metric.
semi-metric
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。