List questions from normed-spaces

Published on 09 Jan 2020 - 19:18

51

Views

Is $||x||_1$ topologically equivalent to the standard norm in $\ell^2$?

Published on 10 Jan 2020 - 12:20

365

Views

Accumulation points and infinitely many points inside open balls

Published on 10 Jan 2020 - 14:07

57

Views

Blow up on PDE: how can I prove that $u$ is bounded in this example?

Published on 25 Mar 2026 - 19:04

203

Views

Accumulation points, open sets and intersections

Published on 11 Jan 2020 - 10:24

44

Views

Inequality between norms

Published on 11 Jan 2020 - 13:47

325

Views

Doubt about $H_{\infty } $ norm of a transfer function

Published on 08 Apr 2026 - 12:43

138

Views

Trace of a matrix and its Schatten 3-norm

Published on 11 Jan 2020 - 18:19

292

Views

The squared euclidean norm of an induced matrix norm

Published on 28 Mar 2026 - 23:58

140

Views

In which circumstances ||Av|| = ||A|| ||v||?

Published on 06 Apr 2026 - 12:17

100

Views

Norm of a bounded functional

Published on 08 Apr 2026 - 13:33

218

Views

Computation of Sobolev norm.

Published on 02 Apr 2026 - 10:40

36

Views

Norm of the $ \Gamma$-invariant functions

Published on 12 Jan 2020 - 2:06

21

Views

Finding the norm of the operator $A: L^1(0,3) \rightarrow L^1(0,3)$ (Af)(x) = (x+5)f(x)

Published on 12 Jan 2020 - 18:46

66

Views

Covergence of sequences in a pre-Hilbert space

Published on 25 Mar 2026 - 4:39

List Question

equivalent norms in $\ell^2$?

Is $||x||_1$ topologically equivalent to the standard norm in $\ell^2$?

Accumulation points and infinitely many points inside open balls

Blow up on PDE: how can I prove that $u$ is bounded in this example?

Accumulation points, open sets and intersections

Inequality between norms

Doubt about $H_{\infty } $ norm of a transfer function

Trace of a matrix and its Schatten 3-norm

The squared euclidean norm of an induced matrix norm

In which circumstances ||Av|| = ||A|| ||v||?

Norm of a bounded functional

Computation of Sobolev norm.

Norm of the $ \Gamma$-invariant functions

Finding the norm of the operator $A: L^1(0,3) \rightarrow L^1(0,3)$ (Af)(x) = (x+5)f(x)

Covergence of sequences in a pre-Hilbert space

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