List questions from banach-spaces

Published on 27 Mar 2026 - 18:49

75

Views

Analyticity of a certain Banach manifold

Published on 14 Apr 2026 - 13:01

743

Views

When is $C(X)$ reflexive?

Published on 11 Apr 2026 - 13:07

875

Views

How to find out if a function belongs to $H^2$ or $H^1$

Published on 18 Apr 2026 - 23:24

104

Views

extending a functional while preserving its norm

Published on 08 Apr 2026 - 19:32

313

Views

Is it true that the closed convex hull of a compact subset of the dual equipped with the w*-topology is compact?

Published on 11 Apr 2026 - 19:02

83

Views

Trouble finding a function satisfying an integral equation

Published on 08 Apr 2026 - 21:23

1.3k

Views

dom(A) is a Banach space w.r.t. the Graph-norm

Published on 16 Apr 2026 - 11:33

768

Views

Bounded linear extension of an operator whose co-domain is incomplete.

Published on 11 Apr 2026 - 19:26

46

Views

A singleton as domain sum of a series

Published on 17 Apr 2026 - 0:16

952

Views

Space of Lipschitz continuous functions is complete

Published on 30 Mar 2026 - 15:29

138

Views

Norms on an Ultraproduct

Published on 12 Apr 2026 - 6:27

107

Views

Proving continuity of a operator $T\colon E \to E'$

Published on 25 Mar 2026 - 22:23

147

Views

Does the approximation property pass to subspaces?

Published on 09 Apr 2026 - 17:01

62

Views

In $(C[0,1],||.||_{\infty})$ , is the set $\{p(x)\in C[0,1]$, $p(x)$ is a polynomial $:\int_0^1 p(x)dx=1\}$ totally bounded?

Published on 17 Apr 2026 - 12:53

List Question

Showing that $(a_n)_n \in l_1$ provided $\sum_{k=1}^\infty a_kx_k$ exists for any $(x_n)_n \in c_0$

Analyticity of a certain Banach manifold

When is $C(X)$ reflexive?

How to find out if a function belongs to $H^2$ or $H^1$

extending a functional while preserving its norm

Is it true that the closed convex hull of a compact subset of the dual equipped with the w*-topology is compact?

Trouble finding a function satisfying an integral equation

dom(A) is a Banach space w.r.t. the Graph-norm

Bounded linear extension of an operator whose co-domain is incomplete.

A singleton as domain sum of a series

Space of Lipschitz continuous functions is complete

Norms on an Ultraproduct

Proving continuity of a operator $T\colon E \to E'$

Does the approximation property pass to subspaces?

In $(C[0,1],||.||_{\infty})$ , is the set $\{p(x)\in C[0,1]$, $p(x)$ is a polynomial $:\int_0^1 p(x)dx=1\}$ totally bounded?

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