【摘要】 给出代数上一个模的分解定理，并证明在一定条件下，一个R—模的某种分解可由该模的一个T—子模的分解确定，此T为R的子环。同时结合等变预备定理讨论出现有等变分歧理论中的模，并将一些已知结果[3，4，6]推广到更一般的情形。更多还原

【Abstract】 A theorem about the resolution of a model is given. It is explained that a certain resolution of an R -model is decided to some extent by the resolution of a T-sub model, where T is a subring of R. The models in the equivariant bifurcation theory are studied by the equivariant malgrange preparation theorem. Some known results are generalized in more general cases.更多还原