Let $G$ be an (additive) abelian group. Is there a concise, standard term for the order of the kernel $K$ of the endomorphism $g\mapsto 2g$? Or alternatively, for the index of $K$?

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

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

asked

6 years ago

viewed

362 times