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Questions
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Is there a general projection formula for morphisms of ringed topoi?

sep 11 11 at 16:25 shenghao 2,653●5●23

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11
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The algebraic fundamental group of a reductive algebraic group

jan 11 11 at 20:53 Masoud 133●5

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What are the automorphism groups of (principally polarized) abelian varieties?

may 8 11 at 18:09 Torsten Ekedahl 17.9k●1●42●68

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comparison of de Rham cohomology and etale cohomology

dec 2 10 at 14:03 Minhyong Kim 7,179●5●30●52

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The automorphism group of a hyperelliptic curve

jul 1 at 4:19 Tony 11●1

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4
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cohomology of moduli spaces

apr 14 11 at 12:44 shenghao 2,653●5●23

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7
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Does S^6 have the structure of an algebraic variety?

nov 27 11 at 6:02 Sándor Kovács 23.8k●2●53●73

 
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2
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702
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Is the inertia stack of a Deligne-Mumford stack always finite?

jan 21 10 at 3:12 Anton Geraschenko♦♦ 13.7k●3●48●108

 
8
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1
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A faithful representation “generates” all the other representations

oct 4 10 at 4:35 Ben Webster♦ 20.7k●1●44●114

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10
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blow-up proper varieties to projective ones

feb 7 11 at 10:28 Qing Liu 8,585●17●26

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