Theo Buehler's user avatar
Theo Buehler's user avatar
Theo Buehler's user avatar
Theo Buehler
  • Member for 13 years, 3 months
  • Last seen more than 10 years ago
54 votes
Accepted

Freyd-Mitchell's embedding theorem

47 votes

Properly Discontinuous Action

41 votes
Accepted

Why the name 'separable' space?

34 votes
Accepted

Does there exist an isometry between $L^p$ and $l^p$?

28 votes
Accepted

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?

27 votes
Accepted

What's an example of a locally presentable category "in nature" that's not $\aleph_0$-locally presentable?

23 votes

Information about publishing and citations

17 votes
Accepted

Non-regular Connected Hausdorff Banach Manifold

14 votes
Accepted

When do 0-preserving isometries have to be linear?

11 votes

Why are differential forms called closed and exact?

10 votes
Accepted

Sections of topological group extensions

10 votes

Are measurable homomorphisms $ (\Bbb{C},+) \to (\Bbb{C},+) $ or $ (\Bbb{C},+) \to (\Bbb{C},*) $ continuous, and do they admit an explicit description?

10 votes

Morphisms of Banach spaces

10 votes
Accepted

No injective groups with more than one element?

9 votes

Does a compact semilocally simply connected geodesic space have the homotopy type of a CW complex?

8 votes

Derived functor

7 votes
Accepted

Is anything known about the "closure" of an additive category by adding all the images and kernels?

6 votes
Accepted

Characterizations of amenable groups which use the space $\ell_1(G)$ and convolution

6 votes
Accepted

Nondifferentiability set of an arbitrary real function

6 votes
Accepted

Ergodic decomposition of quasi-invariant measure

6 votes
Accepted

separability of a certain space of continuous functions, II

5 votes
Accepted

On a decomposition of L^1(G)

5 votes

How to calculate the Feigenbaum constant to high precision?

4 votes

When is the group of homeomorphisms of a compact space locally compact?

4 votes
Accepted

smooth cohomology of Lie groups

4 votes

Constructions unique up to non-unique isomorphism

4 votes
Accepted

quotient sigma-algebra on quotient space of locally compact groups

4 votes
Accepted

On locally convex (and compactly generated) topological vector spaces

4 votes

When do isometric actions exist?

4 votes

Universal sets in metric spaces