常见的向量范数 设向量x=(x12x2…,xn) xC=∑|x x|2=(∑|x12)2=(x,x)2=(x X max了x2 1≤i<n常见的向量范数 || || max{| |} || || ( | | ) ( , ) ( ) || || | | ( , ,..., ) 1 2 1 2 1 2 1 1 2 2 1 1 1 2 i i n T n i i n i i T n x x x x x x x x x x x x x x    = = = = = = = =   设向量