西安毛子科技大学XIDIAN UNIVERSITY任取 β,(j =1,2,..,s),将A的第j列添在A,的右边构成的矩阵记为B,，则(β1,β2,"..β,,β,)=(α1,α2,"",αn)B设 I,β, +lβ, +...+I,β, +Ir+1β, =0,W= 0,即(β1,β2,.",β,,β,)11r+11=0则有 (α,αz,""",αn)B1.1r+11 2 1 2 ( , , , ) ( , , , )        r j n j = B 任取 ( 1,2, , ), j  j s = 将A的第j列添在A1的右边构成的矩阵记为Bj，则 则有 1 1 2 1 ( , , , ) 0 n j r r l B l l    +     =       1 1 2 1 ( , , , , ) 0, r j r r l l l     +     =       即 设 1 1 2 2 1 0, r r r j l l l l     + + + + = +