inverse image

基本解释

This article proved that in the homomorphism of G onto H, the inverse image of a maximal ideal in H is also a maximal ideal in G.
得到了同态满射下，最大理想的逆象是最大理想，并给出了最大理想的象也是最大理想的一些等价条件。
This article proves that in the homomorphism of G onto ■, the inverse image of a maximal normal subgroup in ■ is also a maximal normal subgroup in G.
本文得到了在同态满射下，极大正规子群的逆象也是极大正规子群，并给出了极大正规子群的象也是极大正规子群的一些等价条件。
Then, we obtained that the restricted union and OR of their image, antiimage and inverse image have been given based on the extension principle and anti extension principle.
另外，基于扩张原理和反扩张原理得到了他们同态像、反像和原像的相关性质。