202

Answers
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34
Why worry about the axiom of choice?
33
From Zeta Functions to Curves
29
Which groups have only real and quaternionic irreducible representations?
27
Separable and algebraic closures?
25
Is there a machinery describing all the irreducible representations ?
24
Symmetric powers and duals of vector bundles in char p
21
Simplest example of jumping of cohomology of structure sheaf in smooth families? (2)
21
How does Tate verify his own conjecture for the Fermat hypersurface?
20
What do coherent topoi have to do with completeness?
20
“Largest” finite-dimensional Lie subgroups of Diff(S^n), are they known?
19
Why are normal crossing divisors nice?
19
The role of completeness in Hilbert Spaces
19
Which ‘well-known’ algebraic geometric results do not hold in characteristic 2?
18
Motivic characterization of affine spaces
18
What are some fundamental “sources” for the appearance of pi in mathematics?
17
extensions, abelian varieties, $\mathbb{G}_m$
16
Is $Sym^n (V^*) \cong Sym^n (V)^\ast$ naturally in positive characteristic?
16
Analogue of Smith normal form for matrices over $\mathbb Z[t]$
15
What is the wild fundamental group?
15
Is a polynomial group law on $\mathbb{R}^n$ automatically nilpotent?
15
projective module
15
What about the empty torsor?
14
Automorphism group of a scheme
14
Central extensions of group schemes
14
Finiteness property of automorphism scheme
14
Confusion over a point in basic category theory
14
Is every homogeneous G-variety of the form G/H?
14
Is every projective space bundle locally trivial in the Zariski topology?
13
Torsors for finite group schemes
13
Where can I easily look up / calculate (abelian) group cohomology?
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