Find all endomorphisms between (Q,+) and (R,+).Which of them are automorphisms?

Asked May 07 '18 at 19:35

Active May 19 '18 at 17:38

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Can you help me how can i find all endomorphisms between (Q,+) and (Q,+).Which of them are automorphisms?

edited May 19 '18 at 17:38

asked May 07 '18 at 19:35

There is no isomorphism between the two groups, see here. – Dietrich Burde May 07 '18 at 19:40
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"endo" should be "homo," "auto" should be "iso." – Randall May 07 '18 at 19:41

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