Timeline for Tangent sheaf of $\mathbb{P}^1\times\mathbb{P}^1$
Current License: CC BY-SA 2.5
5 events
| when toggle format | what | by | license | comment | |
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| May 23, 2010 at 22:53 | comment | added | S. Carnahan♦ | +1 for self-reflection and enthusiastic punctuation. I think you're being a little hard on yourself. | |
| May 23, 2010 at 20:14 | history | edited | alfio | CC BY-SA 2.5 |
added 199 characters in body
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| May 23, 2010 at 15:00 | comment | added | S. Carnahan♦ | Here's a nice lower bound: there is an action of the three dimensional group $PGL_2$ on each factor by automorphisms, and you can get tangent fields from the Lie algebra. | |
| May 23, 2010 at 14:45 | comment | added | Charles Siegel | Well, that's because it's the direct sum of the pullbacks of the tangent bundle on $\mathbb{P}^1$, so you just need that it has 3 dimensional global sections. | |
| May 23, 2010 at 14:36 | history | asked | alfio | CC BY-SA 2.5 |