List questions from normed-spaces

Published on 11 Apr 2026 - 18:08

36

Views

A complete metric space with some convex-type property

Published on 02 May 2020 - 15:50

115

Views

Does this 2-norm inequality hold?

Published on 08 Apr 2026 - 16:22

75

Views

$L^{2}$ inner product inequality.

Published on 03 May 2020 - 15:29

190

Views

Lower bound on matrix norm with a non-zero constant entry

Published on 11 Apr 2026 - 0:39

221

Views

Example for a polynomially compact operator

Published on 12 Apr 2026 - 4:38

269

Views

The Relationship between norms and metrics

Published on 03 May 2020 - 19:11

1.2k

Views

Condition number of a transposed matrix

Published on 25 Mar 2026 - 8:07

42

Views

Example for a proper Seminorm on $\mathbb{R}^n$

Published on 03 May 2020 - 19:17

135

Views

Can a vector space be reconstructed from its norm?

Published on 03 May 2020 - 19:34

101

Views

The norm of a set whose elements have different shapes

Published on 04 May 2020 - 4:52

206

Views

Norm and eigenvalues of a multiplication operator

Published on 09 Apr 2026 - 20:47

98

Views

Can a normed vector space be reconstructed from its metric?

Published on 04 May 2020 - 21:22

112

Views

Closure of $C^\infty(\Omega)$ with respect to non-standard norm

Published on 11 Apr 2026 - 17:59

69

Views

Proving $\|L\| = \sup\left\{\frac{\|L(x)\|}{\|x\|}\colon x\ne 0\right\}$

Published on 30 Mar 2026 - 14:10

List Question

Is this a sufficient definition for a linear functional on a subspace $Z$ of normed space $X$?

A complete metric space with some convex-type property

Does this 2-norm inequality hold?

$L^{2}$ inner product inequality.

Lower bound on matrix norm with a non-zero constant entry

Example for a polynomially compact operator

The Relationship between norms and metrics

Condition number of a transposed matrix

Example for a proper Seminorm on $\mathbb{R}^n$

Can a vector space be reconstructed from its norm?

The norm of a set whose elements have different shapes

Norm and eigenvalues of a multiplication operator

Can a normed vector space be reconstructed from its metric?

Closure of $C^\infty(\Omega)$ with respect to non-standard norm

Proving $\|L\| = \sup\left\{\frac{\|L(x)\|}{\|x\|}\colon x\ne 0\right\}$

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