运用矩阵分块方法研究三角代数上的一类非线性可交换映射:模线性可交换映射。刻画了此类映射的具体形式,给出了三角代数上模线性可交换映射是真可交换映射的充分条件,并证明了套代数上的每个模线性可交换映射都是真可交换映射。
The authors studied a class of nonlinear commuting maps (namely, modulo linear commuting map)on triangular algebras,described the forms of such maps,and gave such a sufficient condition that every modulo linear commuting map on triangular algebras is proper. As an application,it is proved that every modulo linear commuting map on nest algebras is proper.