定理3.1矩阵序列{A}收敛于A的充分 必要条件是 lim44)4=0 k)0 其中为任意一种矩阵范数。 证明取矩阵范数 14L=2a i=1i=1 必要性：设 lim 4()=A=(an) →00 his doc uced by trial ver of Print2Flash.Visit wThis document is produced by trial version of Print2Flash. Visit www.print2flash.com for more information