Tell me more ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.
up vote 1 down vote favorite
1

Please someone can help me in this question?

Let G be an abelian group. Prove that every subgroup of G is normal.

I am looking for hints so that I can create my own solution. THANK YOU ALL!

share|improve this question

1 Answer

up vote 3 down vote

Hint: For any $g,h \in G$, $ghg^{-1}=h$.

share|improve this answer
thanks for helping! – YuYu Huang Feb 9 at 7:15

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.