摘要: 先回顾一下范数的定义(en.wikipedia.org/wiki/Norm_(mathematics)):Given a vector space V over a subfield F of the complex numbers, a norm on V is a function p: V →... 阅读全文
posted @ 2015-01-01 11:38 ttang 阅读(41481) 评论(2) 推荐(8)