Timeline for ramification locus for finite morphism and Abhyankar's Lemma
Current License: CC BY-SA 4.0
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| when toggle format | what | by | license | comment | |
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| Sep 3, 2020 at 22:39 | comment | added | KReiser | The ramification locus is just the support of the sheaf $\Omega_{X/Y}$ on $X$. This is in many texts. To get examples with $X,Y$ singular, all you need to do is to compute what $\Omega_{X/Y}$ for a map of singular varieties $X\to Y$ and see where it's supported. | |
| Sep 3, 2020 at 17:19 | history | asked | xin fu | CC BY-SA 4.0 |