List questions from normed-spaces

Published on 26 Mar 2026 - 12:33

136

Views

Convergence of series in Hilbert space

Published on 12 Apr 2026 - 12:08

281

Views

Two absolute values satisfy $|x|_1=|x|_2^t$ iff they satisfy $c_1|x|_1\leq |x|_2\leq c_2|x|_1$.

Published on 08 Jun 2020 - 16:17

166

Views

Non-complete and non-reflexive normed space

Published on 12 Apr 2026 - 18:26

226

Views

Show that $\|A\|_{\infty} \leq \sqrt n \|A\|_2$

Published on 01 Apr 2026 - 5:48

70

Views

Unbounded symmetric convex sets

Published on 09 Jun 2020 - 0:03

192

Views

Why did Spivak choose this definitions? ("Calculus on Manifolds", the definition of the norm, the definition of open sets)

Published on 12 Apr 2026 - 15:10

609

Views

Prove that $||A||_2 = \max_{||x||_2=1, ||y||_2 = 1} |y^TAx|$

Published on 07 Apr 2026 - 13:42

34

Views

How to show that if $V \in C^{m \times m}$ unitary and $A \in C^{m \times m}$ then $||AV||_2=||A||_2$

Published on 09 Jun 2020 - 19:39

72

Views

Best norm of $A$ in order to approximate $x^TAx$

Published on 12 Apr 2026 - 6:59

99

Views

New norm with strictly coarser induced topolgy

Published on 28 Mar 2026 - 8:10

228

Views

Equivalence of two norms in a Banach space

Published on 03 Apr 2026 - 20:17

41

Views

The exact value of the norm of two vectors

Published on 11 Jun 2020 - 15:18

203

Views

Topologies and completeness

Published on 12 Apr 2026 - 4:23

235

Views

Function continuous almost everywhere with $L^p(\mathbb{R})$ norm that exists for $p>1$.

Published on 11 Apr 2026 - 23:27

List Question

$p$-Norm of Block Diagonal Matrix

Convergence of series in Hilbert space

Two absolute values satisfy $|x|_1=|x|_2^t$ iff they satisfy $c_1|x|_1\leq |x|_2\leq c_2|x|_1$.

Non-complete and non-reflexive normed space

Show that $\|A\|_{\infty} \leq \sqrt n \|A\|_2$

Unbounded symmetric convex sets

Why did Spivak choose this definitions? ("Calculus on Manifolds", the definition of the norm, the definition of open sets)

Prove that $||A||_2 = \max_{||x||_2=1, ||y||_2 = 1} |y^TAx|$

How to show that if $V \in C^{m \times m}$ unitary and $A \in C^{m \times m}$ then $||AV||_2=||A||_2$

Best norm of $A$ in order to approximate $x^TAx$

New norm with strictly coarser induced topolgy

Equivalence of two norms in a Banach space

The exact value of the norm of two vectors

Topologies and completeness

Function continuous almost everywhere with $L^p(\mathbb{R})$ norm that exists for $p>1$.

Trending Questions

Popular # Hahtags

Popular Questions