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Dec 31, 2019 at 5:14 comment added Binai @Mohan It is pretty clear that the derivations should have this property related to the polynomial ideal that we are taking the quotient, but I want to know a characterization (if it exists).
Dec 30, 2019 at 0:00 answer added Devlin Mallory timeline score: 2
Dec 29, 2019 at 15:57 comment added Mohan 1. is just given by the Euler sequence. They are just derivations of the polynomial ring (which are obvious) which takes the equation of the hypersurface to a multiple of the same equation.
Dec 28, 2019 at 3:52 comment added Binai It was really bad written and it was missing an essential part of the data. Sorry for my mistake in not double checking it. I tried to clarify now...
Dec 28, 2019 at 3:48 history edited Binai CC BY-SA 4.0
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Dec 27, 2019 at 19:38 comment added Sasha @abx: "do not exist" means "=0". But the question is, indeed, quite unclear.
Dec 27, 2019 at 17:20 comment added abx What do you call a derivation on a surface? If you mean a tangent vector field, they do not exist ($\neq 0$) on a K3.
Dec 27, 2019 at 16:51 history asked Binai CC BY-SA 4.0