Timeline for Coinciding induced maps
Current License: CC BY-SA 2.5
5 events
| when toggle format | what | by | license | comment | |
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| May 17, 2010 at 21:36 | vote | accept | AAK | ||
| May 17, 2010 at 15:50 | comment | added | Torsten Ekedahl | It is enough that the source complex is projective (or the target complex injective) to construct things inductively. If you like you can replace $B$ in my example by $\mathbb Q/\mathbb Z$ in degrees $0$ and $1$ with a suitable map $A \to B$ and get the same counterexample. | |
| May 17, 2010 at 10:41 | comment | added | Qfwfq | @adeel: Isn't $\mathbb{Z}$ a projective module? And aren't the above complexes (in Ekedahl's answer) bounded? | |
| May 17, 2010 at 8:11 | history | edited | Torsten Ekedahl | CC BY-SA 2.5 |
Corrected mixup between left and right.
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| May 17, 2010 at 7:57 | history | answered | Torsten Ekedahl | CC BY-SA 2.5 |