Timeline for Cohen-Macaulayness of inseparable isogeny k-algebras
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 20, 2013 at 16:44 | comment | added | Mohan | There are no reasonable relation between the two. | |
| Nov 20, 2013 at 16:42 | comment | added | NN guest | Dear Mohan, I am very interested in the relation between the depths of $R$ and $S$. Any suggestion please! | |
| Nov 14, 2013 at 20:20 | comment | added | Mohan | There are better experts in this forum. It all depends on what you want to know. | |
| Nov 14, 2013 at 20:13 | comment | added | NN guest | Thanks Mohan! Do you know any reference to learn about inseparable isogeny $k$-algebras? | |
| Nov 14, 2013 at 16:02 | comment | added | Mohan | In general this is false. For example, take $R=k[x,y], S=k[x^4,x^3y,xy^3,y^4]$, where $k$ has characteristic 2. $R$ is CM, $S$ is not CM and we have, $R^4\subset S\subset R$. | |
| Nov 14, 2013 at 14:49 | history | asked | NN guest | CC BY-SA 3.0 |