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JSE's user avatar
JSE's user avatar
JSE
  • Member for 14 years, 5 months
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119 votes
33 answers
14k views

Examples of theorems misapplied to non-mathematical contexts

108 votes
20 answers
18k views

Mathematical habits of thought and action which would be of use to non-mathematicians

51 votes
3 answers
3k views

What is the sandpile torsor?

36 votes
1 answer
2k views

Tell me an algebraic integer that isn't an eigenvalue of the sum of two permutations

34 votes
4 answers
3k views

Curves which are not covers of P^1 with four branch points

26 votes
2 answers
2k views

Is there any sense in which Dirichlet density is "optimal?"

25 votes
3 answers
1k views

Statistics of irreps of S_n that can be read off the Young diagram, and consequences of Kerov–Vershik

25 votes
11 answers
3k views

Conjugacy classes in finite groups that remain conjugacy classes when restricted to proper subgroups

23 votes
3 answers
2k views

Zeroes of the random Fibonacci sequence

22 votes
3 answers
1k views

A historical question: Hurwitz, Luroth, Clebsch, and the connectedness of $\mathcal{M}_g$

22 votes
2 answers
1k views

The image of the point-pushing group in the hyperelliptic representation of the braid group

20 votes
0 answers
1k views

Could unramified Galois groups satisfy a version of property tau?

19 votes
3 answers
1k views

What proportion of math papers are collaborative?

18 votes
1 answer
587 views

Does every hyperbolic curve over a finite field have an etale cover with a real Frobenius eigenvalue?

18 votes
1 answer
785 views

Do mapping classes have gonality?

16 votes
1 answer
514 views

Chromatic numbers of infinite abelian Cayley graphs

16 votes
4 answers
1k views

K3 surfaces with good reduction away from finitely many places

15 votes
2 answers
2k views

How is the Ising model an example of a lattice model as per Kontsevich?

14 votes
1 answer
431 views

Is there a Morita cocycle for the mapping class group Mod(g,n) when n > 1?

14 votes
1 answer
909 views

Partitioning the vertices of an n-cube with random hyperplane cuts

13 votes
2 answers
660 views

Complexity of a weirdo two-dimensional sorting problem

13 votes
1 answer
860 views

Lotteries, Turan's problem, and minimization of risk

12 votes
1 answer
687 views

Is there a canonical height on the Weil-Chatelet group?

11 votes
1 answer
1k views

Can a rational family of genus-g curves have generic gonality? Can it be Brill-Noether general?

11 votes
2 answers
668 views

"Probabilistic ultrafilters?"

11 votes
3 answers
1k views

Greatest common divisor of a^{2^n}-1 and b^{2^n}-1

11 votes
0 answers
396 views

Detecting a module for the free group algebra on a finite quotient

10 votes
1 answer
447 views

Asymptotic behavior of a "strange" arithmetic function

8 votes
0 answers
642 views

Non-hyperelliptic families of curves with trivial Ceresa class (or Gross-Schoen class)

8 votes
1 answer
552 views

Subsets of [1..N] with no three-term arithmetic progressions and no large gaps