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# Questions

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### When does sheaf cohomology commute with arbitrary direct sums?

feb 5 at 9:48 Martin Brandenburg 29.1k245129

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### Pullbacks of Abelian Categories and their Ext-Groups

jul 22 11 at 16:22 Lennart Meier 3,0821332

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### Are the global sections of a vector bundle a projective module?

nov 20 at 16:13 Mahdi Majidi-Zolbanin 1,7921211

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### Modular interpretation of nebentypus

mar 21 at 17:55 Lennart Meier 3,0821332

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### Group Cohomology of Symmetric Powers

nov 1 11 at 0:19 Ralph 12.5k1036

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jul 4 10 at 13:27 Lennart Meier 3,0821332

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### Automorphisms of Generic Abelian Varieties

apr 23 at 21:00 Lennart Meier 3,0821332

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