List questions from geometric-functional-analysis

Published on 22 Feb 2026 - 20:08

167

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How to vary a second order function with respect to the metric tensor?

Published on 28 Jan 2018 - 20:11

369

Views

About non-separable Hilbert spaces

Published on 04 May 2018 - 3:00

123

Views

Differentiability of Norms of $l_{\infty}$

Published on 22 Feb 2026 - 21:20

291

Views

Realizing the Berkovich affine line as a union of Berkovich spectrums

Published on 17 Jul 2018 - 14:42

154

Views

Definition of the Berkovich spectrum

Published on 23 Jul 2018 - 15:44

231

Views

Distance between two functions in term of a third function

Published on 24 Jul 2018 - 8:46

98

Views

Prove that $\forall t \in \mathbb R$ the set $f^{-1}(\{t\})$ is a hyperplane of $X$

Published on 18 Nov 2018 - 11:47

743

Views

Hahn Banach Theorem implying existence of a nonzero linear functional taking 0 in a linear subspace

Published on 02 Apr 2019 - 1:33

972

Views

Given a "composite" norm, what polygon describes its unit ball?

Published on 01 Jun 2019 - 22:07

164

Views

Proving that the norm of a linear and surjective operator is 1 (Step in Figiel's Theorem)

Published on 30 Jun 2019 - 21:23

94

Views

Homeomorphism between a piece of sphere and a convex set on a Banach space.

Published on 29 Oct 2019 - 18:13

50

Views

Proving three convex surfaces intersect using 2 Dimensional intermediate value theorem

Published on 03 Nov 2019 - 3:11

305

Views

Applications of Sard's Theorem.

Published on 08 Nov 2019 - 21:03

37

Views

refering something as "non-linear" when there is no underlying linear structure

Published on 10 Mar 2020 - 15:18

List Question

Bound degrees of sparse random graphs

How to vary a second order function with respect to the metric tensor?

About non-separable Hilbert spaces

Differentiability of Norms of $l_{\infty}$

Realizing the Berkovich affine line as a union of Berkovich spectrums

Definition of the Berkovich spectrum

Distance between two functions in term of a third function

Prove that $\forall t \in \mathbb R$ the set $f^{-1}(\{t\})$ is a hyperplane of $X$

Hahn Banach Theorem implying existence of a nonzero linear functional taking 0 in a linear subspace

Given a "composite" norm, what polygon describes its unit ball?

Proving that the norm of a linear and surjective operator is 1 (Step in Figiel's Theorem)

Homeomorphism between a piece of sphere and a convex set on a Banach space.

Proving three convex surfaces intersect using 2 Dimensional intermediate value theorem

Applications of Sard's Theorem.

refering something as "non-linear" when there is no underlying linear structure

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