The concepts of derived operator are introduced in this paper.It is proved that ,for a given finite set X, appropriate order relations ≤ can be defined on D (X) ( the set of all matroids derived operators on X ), I (X) ( the set of all matroids Interior operators on X ), so that both ( D (X), ≤) and (I(X), ≤) are complete lattices.%定义了拟阵的导算子、内部算子,证明了对每个给定的有限集X,可以给D(X)(即X上拟阵导算子的全体),I(X)(即X上拟阵内部算子的全体)上赋予适当的序≤使得(D(X),≤)与(I(X),≤)(即X上拟阵导算子的全体)之间是完备格同构的。
展开▼