List questions from hilbert-spaces

Published on 12 Oct 2018 - 9:56

1.3k

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Integral equations and the Fredholm alternative / theory

Published on 25 Mar 2026 - 10:52

100

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Can a wo-converging sequence of bounded operators on a Hilbert space be NOT uniformaly bounded？

Published on 26 Mar 2026 - 2:55

626

Views

A question on Hilbert spaces concerning kernel and partial isometry

Published on 13 Oct 2018 - 12:50

106

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Is there a simple characterization of the functions for which the Fourier inversion theorem holds identically?

Published on 25 Mar 2026 - 12:54

73

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On compactness in a Hilbert space $H$

Published on 14 Oct 2018 - 14:53

96

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Matrix operator, basis in a Hilbert space.

Published on 14 Oct 2018 - 23:19

1.4k

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Orthonormal basis for Sobolev Space $H^1[0,1]$ in one dimension

Published on 15 Oct 2018 - 7:58

82

Views

A reproducing kernel Hilbert Space. Barry Simon problem 4.

Published on 25 Mar 2026 - 8:51

281

Views

Constructing an orthonormal basis for $L^2(\mathbb{R^2})$ with an orthonormal basis for $L^2(\mathbb{R})$

Published on 16 Oct 2018 - 10:47

70

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Doubt on unbounded operators in $l^2$

Published on 16 Oct 2018 - 18:02

238

Views

Hilbert space finite dimensional

Published on 16 Oct 2018 - 18:18

222

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Weak lower semicontinuity property of a bounded, coercive and linear operator

Published on 17 Oct 2018 - 14:06

326

Views

how to show a sequence of finite-rank operators converges uniformly

Published on 19 Oct 2018 - 15:23

70

Views

When does a sum of orthogonal projectors converge?

Published on 20 Oct 2018 - 11:31

List Question

Inner product of weakly convergent sequences in Hilbert space

Integral equations and the Fredholm alternative / theory

Can a wo-converging sequence of bounded operators on a Hilbert space be NOT uniformaly bounded？

A question on Hilbert spaces concerning kernel and partial isometry

Is there a simple characterization of the functions for which the Fourier inversion theorem holds identically?

On compactness in a Hilbert space $H$

Matrix operator, basis in a Hilbert space.

Orthonormal basis for Sobolev Space $H^1[0,1]$ in one dimension

A reproducing kernel Hilbert Space. Barry Simon problem 4.

Constructing an orthonormal basis for $L^2(\mathbb{R^2})$ with an orthonormal basis for $L^2(\mathbb{R})$

Doubt on unbounded operators in $l^2$

Hilbert space finite dimensional

Weak lower semicontinuity property of a bounded, coercive and linear operator

how to show a sequence of finite-rank operators converges uniformly

When does a sum of orthogonal projectors converge?

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