问题1：我们为什么定义“同构”函数？ iso-morphology Two groups (G,)and (H,o)are isomorphic if there exists a one-to-one and onto map GH such that the group operation is preserved;that is, (a·b)=(a)o(b) 同构其实可在 for all a and b in G.If G is isomorphic to H is called an isomorphism. 任何代数结构 (系统)上讨论问题1：我们为什么定义“同构”函数 ？ iso-morphology 同构其实可在 任何代数结构 (系统)上讨论