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Dec 21, 2023 at 4:47 comment added AG learner The Fano surface of lines $F(X)$ of a cubic threefold $X$ is a surface of general type. It contains an elliptic curve when $X$ has an Eckardt point. This happens exactly when $\Omega_X^1$ is not ample.
Sep 1, 2023 at 20:57 vote accept Armando j18eos
Sep 1, 2023 at 18:16 history became hot network question
Sep 1, 2023 at 11:56 answer added Donu Arapura timeline score: 7
Sep 1, 2023 at 10:35 history edited Armando j18eos CC BY-SA 4.0
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Sep 1, 2023 at 10:14 history asked Armando j18eos CC BY-SA 4.0