semi-norm This is a generalization of the norm on a vector space which removes the restriction that ∥x∥ = 0 only if x = 0.
semi-norm
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。