Jochen Glueck's user avatar
Jochen Glueck's user avatar
Jochen Glueck's user avatar
Jochen Glueck
  • Member for 7 years, 3 months
  • Last seen this week
  • Wuppertal, Germany
35 votes
3 answers
3k views

What do we learn from the Wronskian in the theory of linear ODEs?

26 votes
2 answers
975 views

Symmetric strengthening of the Cauchy-Schwarz inequality

18 votes
1 answer
1k views

Suprema of directed sets

14 votes
1 answer
651 views

Criterion for a Banach algebra to be finite dimensional

11 votes
1 answer
636 views

Reference request: Fourier transform on the multiplicative group of real numbers

11 votes
2 answers
427 views

On dense embedding of Banach spaces

9 votes
1 answer
494 views

Regular $p$-norm of a matrix

8 votes
3 answers
636 views

Representation theorem for matrices (reference request)

7 votes
3 answers
552 views

Commutant of the conjugations by unitary matrices

7 votes
0 answers
174 views

Hölder continuity of spectrum of matrices

7 votes
2 answers
379 views

Representing an $L^2$-functional by a non-$L^2$-function on a dense subspace

5 votes
1 answer
183 views

Large ideally convex sets

5 votes
1 answer
176 views

Order bounded version of monotone complete $C^*$-algebras

5 votes
0 answers
102 views

Reference request: a survey of (linear) Krein-Rutman theory

5 votes
1 answer
461 views

Weak compactness of order intervals in $L^1$

5 votes
1 answer
182 views

Characterization of operator ranges

5 votes
3 answers
514 views

Reference request: Long-term behaviour of the heat equation for bounded initial data

4 votes
1 answer
446 views

Bicommutant theorem for commutative operator algebras

4 votes
1 answer
207 views

Non-isolated ground state of a Schrödinger operator

4 votes
1 answer
146 views

Mapping inclusion theorem for the numerical range

3 votes
2 answers
326 views

Relative compactness in topological spaces (reference request)

3 votes
1 answer
201 views

Reference request: Baire's theorem for operator ranges

3 votes
0 answers
65 views

Uniform stability of linear operators - reference request

1 vote
1 answer
82 views

Representing an $L^2$-functional by a non-$L^2$-function on a dense subspace - Part II