Timeline for The outer automorphism of the dihedral group $D_4$ and quartic polynomials
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 16, 2018 at 12:35 | history | edited | GNiklasch | CC BY-SA 4.0 |
further minor clarifications
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| Oct 16, 2018 at 11:03 | history | edited | GNiklasch | CC BY-SA 4.0 |
wrong argument replaced
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| Oct 15, 2018 at 22:14 | comment | added | Stanley Yao Xiao | I am concerned that when $f$ is bi-quadratic, that’s is $f(x) = ax^4 + bx^2 + c$ that the terms $(\alpha_1 - \alpha_4)^2 - (\alpha_3 - \alpha_4)^2$ collapse (they are all equal to zero in this case)... | |
| Oct 15, 2018 at 16:48 | history | answered | GNiklasch | CC BY-SA 4.0 |