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Questions
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Has any attempt been made to classify finite groupoids?

feb 27 at 15:10 Ronnie Brown 5,209●17●20

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662
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What’s “bad” about unstable sheaves?

dec 25 at 15:59 Peter Dalakov 1,351●4●10

 
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121
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What’s the relation between henselianization and completion?

oct 14 at 22:49 temp 1,205●2●14

 
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Examples of Calabi-Yau that are birational to each other?

sep 9 at 7:29 Sasha 9,923●1●7●17

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Why are injective modules more complicated than projective modules?

jul 27 at 8:54 Liviu Nicolaescu 11.3k●1●20●33

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Geometric Meaning of higher pushforward for open immersions

jul 16 at 4:12 Karl Schwede 11.3k●1●14●35

 
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Lurie’s “Virtual fundamental classes” and “Geometric derived stacks”

jun 5 at 19:34 David Ben-Zvi 12.6k●1●28●50

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What is known about the Bridgeland stability manifold?

may 30 at 6:38 Csar Lozano Huerta 1,383●8●22

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Has the cotangent complex been used in context other than morphism of schemes?

may 25 at 17:36 Jonathan Wise 4,290●1●10●28

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When do we have derived “Hartogs” for quasi-coherent sheaves?

may 19 at 2:02 temp 1,205●2●14

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