本文利用自伴算子的基本理论及矩阵运算,讨论了由不同的两个微分算式D(4)+D(2)qi(t)(i=1,2)(t∈I=[a,b])生成的两个微分算子Li(i=1,2)积L1L2的自伴性问题,并在常型情况下,获得了积算子自伴的充分必要条件。
In this paper,the problem of the self-adjointness of product of operator generated by two different differential expressions is investigated.And when is non-singular differential operators,we apply the theory of selfadjoint operators as well as matix operations and obtain the sufficient and necessary conditions which product operator is self-adjoint.