Composition therefore it is an isomorphism. q. 8. let g be a group h is a sub group of g, fan automorphism ofg let f(h)= {f(h) : he ll}. prove that f(h) is a su

CompoSition therefore it is an isomorphism. Q. 8. Let G be a group H is a sub group of G, fan automorphism ofG Let f(H)= {f(h) : he ll}. Prove that f(H) is a sub-group of G. Solution: Let h, h, be any two clements of sub group IH so that