一、向量范数的定义 对于向量空间C”上的任意向量x,对应一个实值函数x 如果函数‖·CR满足： 1)正定性x≥0且=0台x=0 2)齐次性ax=ar,aeF 3)三角不等式x+川≤+川 则称为向量x的范数。 范数的性质：)上=x (2x-y川≤x-川 his do d by trial f Print2Flash This document is produced by trial version of Print2Flash. Visit www.print2flash.com for more information