Timeline for Homomorphisms from $k[x,y]$ to $k[x,x^{-1},y]$
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
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| Jun 3, 2019 at 8:36 | comment | added | user237522 | @InfiniteLooper, thank you. So injectivity does not imply that the Jacobian is a non-zero scalar, but probably it must be at least a non-zero element of $k[x,x^{-1},y]$. (Please see math.stackexchange.com/questions/3147174/…). | |
| Jun 2, 2019 at 15:41 | comment | added | InfiniteLooper | For $f(x) = x^2$, and $f(y) = y^2$ the Jacobian is $4xy$ vanishing at 0 | |
| Jun 2, 2019 at 14:43 | history | edited | user237522 | CC BY-SA 4.0 |
added 6 characters in body
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| Jun 2, 2019 at 14:28 | history | edited | user237522 | CC BY-SA 4.0 |
added 6 characters in body
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| Jun 2, 2019 at 14:21 | history | asked | user237522 | CC BY-SA 4.0 |