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Dirk Werner's user avatar
Dirk Werner's user avatar
Dirk Werner's user avatar
Dirk Werner
  • Member for 6 years, 4 months
  • Last seen this week
  • Berlin
13 votes

Every mathematician has only a few tricks

12 votes
Accepted

$C[0,1]$ is not a Grothendieck space

9 votes

Nonseparable counterexamples in analysis

8 votes
Accepted

Containment of $c_0$ in projective tensor products

7 votes
Accepted

When does the dual to the space $K(X)$ of compact operators consist of nuclear functionals?

6 votes
Accepted

Hahn-Banach smoothness of $Y^{**}$ in $X^{**}$

6 votes
Accepted

When is a linear subspace to be closed in all compatible topologies

5 votes
Accepted

A question on Grothendieck space

5 votes

Spectral asymptotics of normal Hilbert-Schmidt operators

5 votes

Weak closure of subsets of the unitary sphere of a Banach space

5 votes

If $E\oplus_\phi E \cong E\oplus_\psi E,$ does it imply that $\phi= \psi$?

5 votes
Accepted

On a property for normed spaces

5 votes
Accepted

type and cotype of spaces of continuous functions

4 votes
Accepted

Is the norm of the Banach space projective tensor product of finite-dimensional C*-algebras a C*-norm?

4 votes
Accepted

Does $K( (\oplus_{n=1}^{\infty}\ell^1_n)_{\ell^p})$ have the weak Phillips property?

3 votes
Accepted

Absolutely summing operators from $l_{p}$ to $l_{q}$

3 votes

A bimonotone basis for $\mathcal{C}[0,1]$?

3 votes

Banach spaces whose biduals are $L_{1}$

3 votes
Accepted

Weak sequential compactness on the space of compact operators

3 votes
Accepted

Centralizers and containment of $c_0$

3 votes

Approximation of a two-variable function by tensor products

3 votes
Accepted

Why ker(1) is a semi M-ideal in $\ell_1$?

3 votes

Prove that Cartesian composition $c_0 \times c_0$ is not isometric isomorphic

3 votes
Accepted

$p$-nuclear operators from $C(K)$ to $L_{p}$

3 votes

Reference request for (weak*) metrizability of a bounded space of signed Radon measures on a compact set

3 votes

Duality mapping of Banach space of continuous functions

2 votes

Regular Borel measures and the measure of a singleton

2 votes
Accepted

Weak*-convergence of signed measures

2 votes
Accepted

"Compactness in measure" in function spaces

2 votes

Equivalence of RKHS with high probability