List questions from banach-spaces

Published on 22 Nov 2015 - 20:56

841

Views

Closed unit ball in $c_0$ is weak* dense in the closed unit ball of $l^{\infty}?$

Published on 12 Apr 2026 - 21:32

558

Views

Why is the quotient map from a Banach space open with respect to the weak topologies?

Published on 30 Mar 2026 - 13:42

421

Views

In the Krein-Milman theorem, can the weak closure of the convex hull be replaced by norm-closure?

Published on 30 Mar 2026 - 16:09

90

Views

Proving $l^{1}(\mathbb{Z})$ with $\ast$ is a commutative Banach algebra

Published on 29 Mar 2026 - 12:41

314

Views

Problem involving the Spectral Mapping theorem.

Published on 03 Apr 2026 - 11:50

196

Views

Local boundedness of monotone operators in general spaces

Published on 11 Apr 2026 - 18:30

359

Views

If every rearrangement of a Schauder basis is also a basis, it is an unconditional one

Published on 08 Mar 2026 - 7:47

183

Views

There is no bounded linear surjection between $\ell_p$ spaces

Published on 12 Apr 2026 - 20:57

211

Views

Is $c_0$ complemented in $C(K)$

Published on 12 Apr 2026 - 16:56

525

Views

Derivative of norm in Banach Spaces

Published on 10 Apr 2026 - 5:53

185

Views

Show that a function is well-defined

Published on 10 Apr 2026 - 18:22

264

Views

Relationship between $c_0$ and $C(K)$

Published on 30 Mar 2026 - 0:18

63

Views

Structure of $C^k$ ($k<\infty$)Riemannian metrics on a manifold

Published on 27 Nov 2015 - 3:55

245

Views

Equidistant sequence in a normed space

Published on 27 Nov 2015 - 15:05

List Question

Cauchy-Lipschitz (or Picard-Lindelöf) theorem for Banach spaces?

Closed unit ball in $c_0$ is weak* dense in the closed unit ball of $l^{\infty}?$

Why is the quotient map from a Banach space open with respect to the weak topologies?

In the Krein-Milman theorem, can the weak closure of the convex hull be replaced by norm-closure?

Proving $l^{1}(\mathbb{Z})$ with $\ast$ is a commutative Banach algebra

Problem involving the Spectral Mapping theorem.

Local boundedness of monotone operators in general spaces

If every rearrangement of a Schauder basis is also a basis, it is an unconditional one

There is no bounded linear surjection between $\ell_p$ spaces

Is $c_0$ complemented in $C(K)$

Derivative of norm in Banach Spaces

Show that a function is well-defined

Relationship between $c_0$ and $C(K)$

Structure of $C^k$ ($k<\infty$)Riemannian metrics on a manifold

Equidistant sequence in a normed space

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