设G1,G2是群,映射f:G1→G2叫作G1到G2的广义同态映射,如果a,b∈G1,等式(ab)^f=afb^f和(ab)f=bfa^f至少有一个成立.利用广义同态映射的概念,本文将算子群的算子集进行扩充,得到一系列有关算子群的结果,从而推广经典的算子群理论.
Given groups G1 and G2,a mapping f:G1→G2 is said to be a generalized homomorphism from G1 to G2 if for any a,b in G1,either (ab)^f=afbf or (ab)^f=bfa^f. By using the concept of generalized homomorphism,we extent the operator set of operator groups so that we generalize the classical theory of operator groups.