Timeline for Non-singular variety covered by pairwise disjoint singular subvarieties
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Sep 18, 2021 at 4:22 | history | edited | n_struct | CC BY-SA 4.0 |
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| Sep 18, 2021 at 3:55 | comment | added | naf | There is really nothing special about characteristic $2$ or $3$: if you allow fibres of higher arithmetic genus, there should exist smooth surfaces in all positve characteristics mapping to a curve with all (geometric) fibres singular. | |
| Sep 17, 2021 at 17:37 | history | edited | n_struct | CC BY-SA 4.0 |
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| Sep 17, 2021 at 16:42 | comment | added | abx | In characteristic zero such a map does not exist, because the generic fiber is regular and therefore smooth. They do exist in characteristic $>0$: look for quasi-elliptic surfaces. | |
| Sep 17, 2021 at 16:39 | comment | added | Wojowu | How are you turning these subvarieties into a partition using axiom of choice? | |
| Sep 17, 2021 at 16:24 | history | edited | n_struct | CC BY-SA 4.0 |
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| S Sep 17, 2021 at 15:59 | review | First questions | |||
| Sep 17, 2021 at 16:09 | |||||
| S Sep 17, 2021 at 15:59 | history | asked | n_struct | CC BY-SA 4.0 |