Timeline for The category of abelian group objects
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Nov 21, 2021 at 1:11 | history | edited | LSpice | CC BY-SA 4.0 |
Titles of referenced posts
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| Nov 21, 2021 at 0:23 | history | edited | R. van Dobben de Bruyn | CC BY-SA 4.0 |
Mistakenly ignored properness hypothesis
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| Nov 21, 2021 at 0:19 | comment | added | R. van Dobben de Bruyn | Oh wow, totally didn't pay attention to the actual adjectives. Fixed. | |
| Nov 20, 2021 at 12:34 | comment | added | Jason Starr | . . . Yet isogenies are not all invertible in this category. | |
| Nov 20, 2021 at 12:13 | comment | added | Jason Starr | The multiplicative group is not a proper scheme. However, your point is valid. Isogenies of Abelian varieties are both monomorphisms and epimorphisms in the category of Abelian group objects in the category of smooth, proper, geometrically integral schemes. | |
| Nov 20, 2021 at 11:55 | history | answered | R. van Dobben de Bruyn | CC BY-SA 4.0 |