Timeline for products and smooth/étale/unramified morphisms
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
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| Feb 9, 2010 at 22:57 | history | edited | Qing Liu | CC BY-SA 2.5 |
Fix a hypothesis.
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| Feb 9, 2010 at 22:02 | comment | added | Emerton | Do you need to assume that $Y \to X$ is surjective? Otherwise, if $Y$ was an open subset with non-empty complement, and $Z\to X$ was any map with image landing in the complement, the fibre product would be empty, hence have all possible properties, but $Z \to X$ could be quite bad. | |
| Feb 9, 2010 at 21:23 | history | answered | Qing Liu | CC BY-SA 2.5 |