§2.6追赶法 Thomas算法) 对角占优矩阵 补充 若矩阵A=(an)xn满足 an|∑ i=1,2…,n 则称为严格对角占优矩阵若矩阵A=(an)m满足 a∑ =1,2 则称A为弱对角占优矩阵.§2.6 追赶法(Thomas算法) 对角占优矩阵: 若矩阵A = (aij)n´n满足 å ¹ = > n j i j ii ij a a 1 | | | | i = 1,2,L,n 则称A为严格对角占优矩阵. 若矩阵A = (aij)n´n满足 å ¹ = ³ n j i j ii ij a a 1 | | | | i = 1,2,L,n 则称A为弱对角占优矩阵. 补充