List questions from banach-spaces

Published on 25 Mar 2026 - 7:47

47

Views

Projection on a closed convex in a Banach space, without inner product.

Published on 25 Mar 2026 - 3:20

100

Views

Stuck with integral $\int_{-\infty}^\infty \left( \frac{\sin(a t+b)}{at+b} \right)^2 \, dt$

Published on 25 Jun 2018 - 17:29

78

Views

If the span of a convex balanced set is norming, is the set itself norming?

Published on 26 Jun 2018 - 19:30

96

Views

Find orbit of element in Banach space

Published on 27 Jun 2018 - 5:29

242

Views

Is $\ell_0$ space a Banach space?

Published on 25 Mar 2026 - 15:11

67

Views

A function space satisfying $ |f(x) -f(y)| \le ||x|^\theta -|y|^\theta| $

Published on 23 Mar 2026 - 10:22

56

Views

$AB$ is invertible but $A$ or $B$ is not invertible.

Published on 28 Jun 2018 - 6:37

330

Views

$\theta$-Holder function and weak derivatives

Published on 25 Mar 2026 - 9:53

91

Views

blocks of a normalized basis dominated by lp

Published on 26 Mar 2026 - 2:35

125

Views

Bounded sequence has Cauchy subsequence w.r.t. $ (x|y)_0:=\sum^\infty_{n=1} 2^{-n}\phi_n(x)\phi_n(y).$

Published on 23 Mar 2026 - 3:13

38

Views

Little question about Banach Space

Published on 02 Jul 2018 - 23:12

875

Views

Notion of convergence on the space of compactly supported continuous functions

Published on 03 Jul 2018 - 1:33

79

Views

Question about Hilbert Space

Published on 25 Mar 2026 - 1:14

360

Views

Compactness criterion for operator between reflexive Banach spaces

Published on 23 Mar 2026 - 1:22

List Question

Fixed-Point theorem, Banach Spaces

Projection on a closed convex in a Banach space, without inner product.

Stuck with integral $\int_{-\infty}^\infty \left( \frac{\sin(a t+b)}{at+b} \right)^2 \, dt$

If the span of a convex balanced set is norming, is the set itself norming?

Find orbit of element in Banach space

Is $\ell_0$ space a Banach space?

A function space satisfying $ |f(x) -f(y)| \le ||x|^\theta -|y|^\theta| $

$AB$ is invertible but $A$ or $B$ is not invertible.

$\theta$-Holder function and weak derivatives

blocks of a normalized basis dominated by lp

Bounded sequence has Cauchy subsequence w.r.t. $ (x|y)_0:=\sum^\infty_{n=1} 2^{-n}\phi_n(x)\phi_n(y).$

Little question about Banach Space

Notion of convergence on the space of compactly supported continuous functions

Question about Hilbert Space

Compactness criterion for operator between reflexive Banach spaces

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