11

Questions
votes newest views recent
12
40
votes
5
answers
3k
views

Does this formula have a rigorous meaning, or is it merely formal.

jan 8 12 at 21:17 Andrey Rekalo 13.9k●1●32●68

7
13
votes
2
answers
1k
views

Euler Characteristic of a manifold with non-vanishing vector field,

sep 11 10 at 18:57 Dmitri 16.5k●1●36●77

8
20
votes
4
answers
955
views

When are two symplectic forms “isotopic”?

mar 5 11 at 20:37 Elizabeth S. Q. Goodman 1,064●6●16

11
20
votes
3
answers
902
views

When are the eigenspaces of the Laplacian on a compact homogeneous space irreducible representations?

feb 19 12 at 3:46 Sigurdur Helgason 341●5●4

1
13
votes
2
answers
806
views

Is there a name for sets for which it is easier to test membership than to find members---and vice versa?

jan 7 11 at 15:23 Timothy Chow 14.4k●1●68●137

3
11
votes
5
answers
787
views

Is this formulation of the Singular Value Decomposition standard?

jan 7 11 at 13:43 Denis Serre 18.7k●1●31●93

1
6
votes
5
answers
668
views

Are these Two Definitions of ``Uniformly Distributed" Equivalent?

may 19 11 at 11:18 Johann Cigler 1,500●4●14

5
17
votes
1
answer
659
views

If $f:R^n \to R$ is a smooth real-valued function such that $\nabla f : R^n \to R^n$ is a diffeomorphism, what can one conclude about the behavior of $f(x)$ at infinity?

dec 4 10 at 11:45 Theo Buehler 3,666●1●11●25

 
4
votes
1
answer
350
views

Invariant measures for $1$-dimensional discrete dynamical systems

sep 13 10 at 9:15 Ian Morris 1,938●7●16

2
14
votes
1
answer
286
views

Is a smooth action of a semi-simple Lie group linearizable near a staionary point?

dec 10 10 at 14:15 BS 5,248●1●12●25

1 2 next