Timeline for Newton polygon notation for algebraic surface singularities
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Jul 22, 2021 at 20:05 | answer | added | Tom Ducat | timeline score: 2 | |
| Jul 22, 2021 at 5:06 | answer | added | Jonny Evans | timeline score: 5 | |
| Jul 22, 2021 at 5:05 | comment | added | abx | More precisely: if $\sigma $ is the automorphism of $\mathbb{C}^n$ given by the diagonal matrix with entries $(\zeta ^{a_1},\ldots ,\zeta ^{a_n})$, with $\zeta $ a primitive r-th root of 1, the quotient $\mathbb{C}^n/\langle\sigma \rangle$ has a singularity of type $\frac{1}{r}(a_1,\ldots ,a_n )$. | |
| Jul 21, 2021 at 21:57 | history | edited | YCor | CC BY-SA 4.0 |
removed capitals from title
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| Jul 21, 2021 at 18:16 | comment | added | Francesco Polizzi | For instance, a Du Val singularity of type $A_n$ is a cyclic quotient singularity of type $1/n(n, \, n-1)$. | |
| Jul 21, 2021 at 18:15 | comment | added | Francesco Polizzi | These are cyclic quotient singularities, in particular rational singularities. You can find a lot of information by googling these words. For $1/3(1, \, 2)$ and $1/7(1, \, 3)$, another relevant word to google is Hirzebruch-Jung strings. The others are not surface singularities, but $3$-fold singularities. | |
| Jul 21, 2021 at 18:01 | review | First posts | |||
| Jul 21, 2021 at 18:56 | |||||
| Jul 21, 2021 at 17:58 | history | asked | Jim Johnson | CC BY-SA 4.0 |