query: Find all endomorphisms between (Q,+) and (R,+).Which of them are automorphisms?
positive_passages.docid: 27670
positive_passages.text: Group homomorphisms $\mathbb{Q}\to\mathbb{R}$
negative_passages.docid: 1117
negative_passages.text: Is there a bijection between $(0,1)$ and $\mathbb{R}$ that preserves rationality?
negative_passages.docid: 97801
negative_passages.text: If $R_{1}$ and $R_{2}$ are relations on a set S with $R_{1};R_{2}=R_{2};R_{1}$. Then $R_{1}$ and $R_{2}$ are bijective maps
negative_passages.docid: 27757
negative_passages.text: $\mathbb{R}\to\mathbb{R}$ Diffeomorphism with special property
negative_passages.docid: 9562
negative_passages.text: Proving that surjective endomorphisms of Noetherian modules are isomorphisms and a semi-simple and noetherian module is artinian.
negative_passages.docid: 42810
negative_passages.text: Is $(\mathbb{Q},+)$ isomorphic to $(\mathbb{Q}^n,+)$?
negative_passages.docid: 33330
negative_passages.text: Continuous Functions from $\mathbb{R}$ to $\mathbb{Q}$
negative_passages.docid: 5996
negative_passages.text: Are $(\mathbb{R},+)$ and $(\mathbb{C},+)$ isomorphic as additive groups?
negative_passages.docid: 126472
negative_passages.text: Surjective endomorphisms of uniserial modules
negative_passages.docid: 127886
negative_passages.text: Artin's lemma and some morphisms.
negative_passages.docid: 105103
negative_passages.text: Automorphism from $\Bbb Q$ to $\Bbb Q$
negative_passages.docid: 51695
negative_passages.text: Finding all homomorphisms between $\mathbb{Z}/m\mathbb{Z}$ and $\mathbb{Z}/n\mathbb{Z}$
negative_passages.docid: 72853
negative_passages.text: What is the number of automorphisms (including identity) for permutation group $S_3$ on 3 letters?
negative_passages.docid: 152825
negative_passages.text: what are all the open subgroups of $(\mathbb{R},+)$
negative_passages.docid: 126790
negative_passages.text: Basic Isomorphism Question
negative_passages.docid: 111689
negative_passages.text: Surjective, but not injective endomorphism
negative_passages.docid: 69361
negative_passages.text: How do you find the automorphism?