Timeline for Automorphism group of a finite group
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Jul 7, 2017 at 6:44 | comment | added | Jay Taylor | One can find the article by Turner and Voce here cambridge.org/core/services/aop-cambridge-core/content/view/… | |
| Jul 7, 2017 at 6:43 | comment | added | Jay Taylor | Just in case anyone else falls into this trap, it is not true that an automorphism of $A$ lifts to an automorphism of $\mathbb{Z}^n$. Simply take $A = \mathbb{Z}/5\mathbb{Z}$ and let $\phi : A \to A$ be the automorphism defined by $\phi(1+5\mathbb{Z}) = 2+5\mathbb{Z}$. This does not lift to an automorphism of $\mathbb{Z}$ (but it does lift to an endomorphism). A complete solution to when such an automorphism lifts is given in the paper "Tame Automorphisms of Finitely Generated Abelian Groups" by Turner and Voce. | |
| S Apr 9, 2016 at 20:13 | history | suggested | LSpice | CC BY-SA 3.0 |
Added a link, and fixed a few typoes
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| Apr 9, 2016 at 20:04 | review | Suggested edits | |||
| S Apr 9, 2016 at 20:13 | |||||
| Oct 17, 2013 at 6:45 | history | edited | Amritanshu Prasad | CC BY-SA 3.0 |
added 9 characters in body
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| Oct 16, 2013 at 8:18 | history | edited | Amritanshu Prasad | CC BY-SA 3.0 |
added 542 characters in body
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| Oct 16, 2013 at 3:42 | history | answered | Amritanshu Prasad | CC BY-SA 3.0 |