The (T, S,2)-inverse .AT,S(2) of a matrix A is matrix the X satisfying XAX = X,R(X) = T and N(X) = S . This paper deals with the reverse order law for (T,S,2)-inverse of a triple matrix product and proves the necessary and sufficient condition for (ABC)(T4,S4)(2)=C(T3,S3)(2)B(T2,S2)(2)A(T1,S1)(2). |