List questions from frame-theory

1.9k

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Does a Bessel sequence not being a frame mean that $\sum_n|\langle f,f_n\rangle|^2>B\|f\|^2$ for some $f\in H$?

Published on 07 Jun 2012 - 12:59

257

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Does the Hilbert space need to be separable to define frames?

Published on 14 Oct 2012 - 22:27

121

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Zonotope: Image of the Diagonals of a Hypercube Under a Linear Map

Published on 15 Sep 2021 - 15:06

120

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Connections between $0$-toposes and $1$-toposes (Grothendieck and elementary)

Published on 23 Feb 2026 - 6:59

78

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Some questions about frames

Published on 18 Feb 2022 - 15:42

228

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Proof that the eigenvalues of the frame operator $S$ are optimal frame bounds, and that $S = AI$ iff the frame is tight

Published on 23 Feb 2022 - 13:21

101

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Sampling from equal-norm tight frame (Vershynin exercise 5.6.6)

Published on 04 Apr 2022 - 15:36

84

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Estimation of operator norm of the difference between identity and Gram matrix?

Published on 18 May 2022 - 18:28

43

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Properties of a Matrix of Frames

Published on 03 Jul 2022 - 15:32

57

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A particular tight frame system

Published on 10 Jul 2022 - 18:01

72

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Why is this a Parseval Frame?

Published on 11 Jul 2022 - 12:10

117

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Books for the Finite Dimensional Normed Spaces

Published on 30 Aug 2022 - 6:20

255

Views

Is a sequence a frame iff it spans the space?

Published on 26 Oct 2022 - 15:21

List Question

Does a Bessel sequence not being a frame mean that $\sum_n|\langle f,f_n\rangle|^2>B\|f\|^2$ for some $f\in H$?

Does the Hilbert space need to be separable to define frames?

Zonotope: Image of the Diagonals of a Hypercube Under a Linear Map

Connections between $0$-toposes and $1$-toposes (Grothendieck and elementary)

Some questions about frames

Proof that the eigenvalues of the frame operator $S$ are optimal frame bounds, and that $S = AI$ iff the frame is tight

Sampling from equal-norm tight frame (Vershynin exercise 5.6.6)

Estimation of operator norm of the difference between identity and Gram matrix?

Properties of a Matrix of Frames

A particular tight frame system

Why is this a Parseval Frame?

Books for the Finite Dimensional Normed Spaces

Is a sequence a frame iff it spans the space?

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