161

Answers
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113
What programming languages do mathematicians use?
60
What would you want to see at the Museum of Mathematics?
59
Etale cohomology — Why study it?
57
Smooth proper scheme over Z
37
How do I check if a functor has a (left/right) adjoint?
37
How did Birch and Swinnerton Dyer arrive at their conjecture?
36
Fermat’s Last Theorem for Gaussian Integers ( excluding $\mathbb{Z}$ or $i\mathbb{Z}$ )
35
What is the difference between PSL_2 and PGL_2?
34
Tools for the Langlands Program?
33
How do you approach your child’s math education?
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What is the definition of “canonical” ?
32
Is “all categorical reasoning formally contradictory”?
31
Particular problem solved by solving a more general problem. (2)
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Integers not represented by $ 2 x^2 + x y + 3 y^2 + z^3 - z $
30
What to do when your research runs into a computationally challenging problem?
29
Are there Maass forms where the expected Galois representation is $\ell$-adic?
27
Character table does not determine group Vs Tannaka duality
27
If 2^x and 3^x are integers, must x be as well?
25
Why is one interested in the mod p reduction of modular curves and Shimura varieties?
25
What are the reasons for considering rings without identity?
25
Why are topological ideas so important in arithmetic?
25
Still Difficult After All These Years
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Erratum for Cassels-Froehlich (11)
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A Game on Noetherian Rings
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Has mathoverflow yet led to mathematical breakthroughs?
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L-functions and higher-dimensional Eichler-Shimura relation
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Can you prove equivalence without being able to calculate it?
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Is it true that, as Z-modules, the polynomial ring and the power series ring over integers are dual to each other?
18
“Understanding” Gal(\bar Q/Q)
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How do you select an interesting and reasonable problem for a student?
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