To take another example, elliptic geometries with different radii of curvature have isomorphic automorphism groups. 在举一例，不同曲率半径的椭圆几何有同构的自同构群。
We shall use algebraic methods to study graphs which are highly regular although this regularity is not expressed in terms of the automorphism group. 我们将用代数方法来研究高度正则的图，尽管这种正则性不是用自同构群来表达的。
