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Alex
  • Member for 11 years, 4 months
281 answers
978 votes
310k views
1k bookmarks
Examples of common false beliefs in mathematics
1 answer
168 votes
16k views
62 bookmarks
Ultrafilters and automorphisms of the complex field
67 answers
124 votes
45k views
181 bookmarks
Math puzzles for dinner
2 answers
113 votes
26k views
131 bookmarks
Why is the Hodge Conjecture so important?
27 answers
105 votes
37k views
101 bookmarks
Why should one still teach Riemann integration?
19 answers
69 votes
7k views
61 bookmarks
What are some results in mathematics that have snappy proofs using model theory?
22 answers
51 votes
17k views
64 bookmarks
Interesting Calculus Questions/Exercises
4 answers
42 votes
3k views
25 bookmarks
Are there motives which do not, or should not, show up in the cohomology of any Shimura variety?
2 answers
37 votes
7k views
38 bookmarks
What should I read before reading about Arakelov theory?
5 answers
31 votes
7k views
36 bookmarks
Why no abelian varieties over Z?
0 answers
29 votes
2k views
15 bookmarks
What do dessins tell us about the absolute Galois group?
7 answers
26 votes
5k views
17 bookmarks
Etale covers of the affine line
2 answers
22 votes
2k views
14 bookmarks
Comparing cohomology over ${\mathbb C}$ and over ${\mathbb F}_q$
2 answers
21 votes
1k views
9 bookmarks
Elementary proof of algebraicity of Hecke eigenvalues in weight 1
3 answers
21 votes
2k views
15 bookmarks
Number of n-th roots of elements in a finite group and higher Frobenius-Schur indicators
3 answers
19 votes
3k views
12 bookmarks
distinguished triangles and cohomology
1 answer
16 votes
2k views
11 bookmarks
Questions about spectra of rings of continuous functions
2 answers
15 votes
2k views
10 bookmarks
Period rings for Galois representations
3 answers
13 votes
2k views
10 bookmarks
Intuition for Model Theoretic Proof of the Nullstellensatz
1 answer
12 votes
1k views
5 bookmarks
Analogue of Shimura curves in the symplectic case?
1 answer
12 votes
1k views
6 bookmarks
On polarized (pure) Hodge structures
0 answers
10 votes
621 views
4 bookmarks
Local cohomology, the formal function theorem, and a relative form of Lichtenbaum's theorem
3 answers
9 votes
2k views
15 bookmarks
What does Rng^{op} look like?
2 answers
6 votes
1k views
6 bookmarks
In what setting does one usually define mixed sheaves and weights for them?
0 answers
6 votes
396 views
6 bookmarks
Tannakian categories equivalent as abelian categories
3 answers
6 votes
608 views
4 bookmarks
Can one extend a morphism of commutative triangles to a morphism of octahedral diagrams?
1 answer
6 votes
423 views
3 bookmarks
If two fields are elementarily equivalent, what can we say about their Witt rings?
1 answer
4 votes
583 views
4 bookmarks
Morphisms between pure complexes of sheaves
2 answers
4 votes
322 views
2 bookmarks
Determining the field from the topology of the affine space over it.