class automorphism造句

例句与造句

1. Finding a class automorphism in the stability group that is not inner boils down to finding a cocycle for the action that is locally a coboundary but is not a global coboundary.
2. For infinite groups, an example of a class automorphism that is not inner is the following : take the finitary symmetric group on countably many elements and consider conjugation by an infinitary permutation.
3. It's difficult to find class automorphism in a sentence. 用class automorphism造句挺难的