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Luca Francone's user avatar
Luca Francone's user avatar
Luca Francone
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Homogeneous components of Cox RIngs
Thank you! I will carefoully look at your answer!
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Homogeneous components of Cox RIngs
Yes thanks I forgot to ask $O_X(U)$ factorial, which implies that the Picard group of $U$ is trivial. I edited the question.
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Homogeneous components of Cox RIngs
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Homogeneous components of Cox RIngs
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Non-vanishing of generalized minors on T-stable unipotent subgroups