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Questions
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Homotopy type of the complement to a subvariety of $\mathbb C^n$

may 11 11 at 13:38 David Speyer 55.1k●3●102●236

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A bound on the top homology of a complement to a variety in $\mathbb C^n$

may 11 11 at 17:31 Dave Anderson 1,760●6●10

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Is a smooth cubic threefold diffeomorphic to a rational threefold?

dec 7 at 16:33 aglearner 3,868●8●24

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$H^1(X,O_X)$, holomorphic $1$-forms, and $b_1(X)/2$ for normal $X$.

apr 22 at 18:24 Donu Arapura 13.7k●1●28●63

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An element $g$ in a group such that neither $g=1$ nor $g\ne 1$ can be proved.

apr 1 at 10:01 Anton Klyachko 938●2●10

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Max Noether’s residual intersection theorem (Fundamentalsatz): importance and applications

jan 16 12 at 11:21 Francesco Polizzi 18.9k●2●34●55

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A terminological question concerning orbifolds.

apr 18 12 at 12:53 Lee Mosher 5,806●1●9●26

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Actions of finite groups on exotic smooth manifolds of dimension >4

jun 7 at 5:22 MathOverflow♦ 1●2●3

 
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Little puzzle about intersections of Schubert cells.

nov 1 at 2:33 David Speyer 55.1k●3●102●236

 
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Discussion of Luroth’s problem in an article of Beauville

apr 27 12 at 15:10 Artie Prendergast-Smith 1,720●1●8●18

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