Timeline for Is this unipotent group, over characteristic 2, connected?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Mar 27, 2019 at 22:45 | vote | accept | Dror Speiser | ||
| Mar 27, 2019 at 20:56 | answer | added | David E Speyer | timeline score: 5 | |
| Mar 27, 2019 at 19:35 | comment | added | Friedrich Knop | Springer LAG Prop. 2.2.6 answers both questions: The union of irreducible subvarieties, each containing 1, generates a closed connected subgroup. | |
| Mar 27, 2019 at 9:46 | comment | added | YCor | ... and I'd start beforehand solving the analogous problem in size $<7$. It gives the projections to the northwest and southeast blocks, so is certainly useful. | |
| Mar 27, 2019 at 8:59 | comment | added | YCor | To see whether it's Zariski-closed... probably one can describe the group, at the price of a few computations (I'd compute various commutators such as $[a(x),b(y)]$, $[a(x),[a(y),b(z)]]$, etc.) | |
| Mar 27, 2019 at 8:56 | comment | added | YCor | It's generated by the union of two connected (1-parameter) subgroups so is clearly Zariski-connected. | |
| Mar 27, 2019 at 8:55 | history | edited | YCor | CC BY-SA 4.0 |
improved formatting
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| Mar 27, 2019 at 8:17 | history | asked | Dror Speiser | CC BY-SA 4.0 |