Timeline for Example of an unnatural isomorphism
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
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| Nov 5, 2021 at 16:38 | comment | added | Julian Rosen | I don’t understand what $\alpha$ is. But $T\oplus1/T$ is not faithful (e.g. it takes both morphisms $\mathbb{Z}\to\mathbb{Z}/2\mathbb{Z}$ to the same thing), which is another way to see this functor is not isomorphic to the identity. | |
| Feb 15, 2019 at 21:11 | history | edited | Arrow | CC BY-SA 4.0 |
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| Nov 21, 2018 at 1:38 | history | edited | Arrow | CC BY-SA 4.0 |
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| S Nov 20, 2018 at 23:37 | history | answered | Arrow | CC BY-SA 4.0 | |
| S Nov 20, 2018 at 23:37 | history | made wiki | Post Made Community Wiki by Arrow |