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# Questions

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### Preliminaries for Mumford’s Abelian Varieties

jun 6 11 at 12:06 Charles Matthews 9,7401339

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610
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### Lemma of Hironaka in Hartshorne III.9.12

feb 11 12 at 7:16 MZWang 4034

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### Stalks of structure sheaf of fibre product？

jul 18 11 at 7:35 Martin Brandenburg 29.1k246130

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### What is the dimension of a sheaf?

feb 12 12 at 11:16 Harized 1434

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### Does there exist a non effective divisor with positive degree?

oct 25 at 5:32 Sándor Kovács 23.8k25373

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### What is the definition of exceptional divisor？

apr 5 12 at 19:07 Karl Schwede 11.5k11435

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### Definition of CW complexes

mar 21 12 at 10:59 Stephen S 784179

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### Global sections of tensor product of pull-back of two vector bundles

dec 17 11 at 13:03 S. Carnahan 25.6k4190

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### What’s the meaning of pencils in birational geometry?

sep 8 at 17:32 Sándor Kovács 23.8k25373

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