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J. J.'s user avatar
J. J.'s user avatar
J. J.'s user avatar
J. J.
  • Member for 13 years, 7 months
  • Last seen this week
  • Finland
27 votes
1 answer
903 views

Smooth functions for which $f(x)$ is rational if and only if $x$ is rational

13 votes
3 answers
943 views

Nasty examples for different classes of functions

12 votes
4 answers
2k views

Are translations of a polynomial linearly independent?

10 votes
1 answer
602 views

Are two random variables with the same distribution related by an isomorphism of an extended probability space?

10 votes
1 answer
2k views

Fast algorithms for calculating the Möbius inversion

6 votes
0 answers
675 views

How does a Riemannian metric "naturally induce" distances in the Grassmannian bundle

4 votes
1 answer
1k views

Strong law of large numbers for uncorrelated $L^2$ random variables

3 votes
1 answer
2k views

An even map $S^n \to S^n$ of degree two

3 votes
1 answer
177 views

Which non-standard analysis framework to study?

3 votes
1 answer
250 views

Integral related to a geometry problem

1 vote
0 answers
200 views

Estimating the distance to the Julia set of a rational map

1 vote
1 answer
144 views

The complexity of counting solutions to $x_1 + \dots + x_m = N$ in non-negative integers under constraints

1 vote
1 answer
224 views

Maximal Hausdorff dimension of the inverse image of a point

1 vote
1 answer
127 views

Sequence of jointly Gaussian random variables of unit variance converging to zero

0 votes
0 answers
100 views

Proportion of vertices of a hypercube lying inside an ellipsoid