Timeline for Rigidity for the category of comodules over a Hopf algebra
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
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| Apr 17, 2020 at 20:12 | answer | added | Konstantinos Kanakoglou | timeline score: 2 | |
| Feb 20, 2020 at 19:19 | comment | added | Noah Snyder | For modules for a Hopf algebra you need to be careful about finite dimensionality. Even for the trivial Hopf algebra (whose modules are vector spaces) only the subcategory of finite dimensional modules is rigid. I think the situation for comodules is cleaner than for modules because for comodules finite dimensionality can be rephrased in terms of finite generation. So I think you get that the category of finitely generated (presented?) comodules is rigid despite not getting that result for modules. | |
| Feb 20, 2020 at 19:02 | history | edited | user6976 | CC BY-SA 4.0 |
deleted 6 characters in body; edited title
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| Feb 20, 2020 at 18:59 | history | edited | Valery Isaev | CC BY-SA 4.0 |
Fix typos
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| Feb 20, 2020 at 18:47 | history | asked | Max Schattman | CC BY-SA 4.0 |