List questions from spectral-theory

Published on 22 Mar 2015 - 19:28

190

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Spectral convergence for collocation methods

Published on 26 Mar 2026 - 12:42

686

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Efficiently compute the eigenvectors of the Laplacian of a symmetric positive matrix

Published on 25 Mar 2026 - 19:10

74

Views

Making it possible to do a Fourier transform on it: $\frac{1}{(k+w)^2(a^2 +w^2)}$

Published on 28 Mar 2026 - 21:34

2.5k

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Find the spectrum of the operator $T: \ell^2(\mathbb{C}) \to \ell^2(\mathbb{C})$ defined by $(Tx)_n = \frac{x_n}{n}$

Published on 29 Mar 2015 - 18:51

365

Views

Clustering with SVD

Published on 30 Mar 2026 - 10:12

81

Views

spectral theory expandable to arbitrary polynomials?

Published on 03 Apr 2015 - 16:45

719

Views

How is the Point Spectrum of a Compact Operator Countable?

Published on 28 Mar 2026 - 20:07

197

Views

A paradox derived from the open mapping theorem

Published on 07 Apr 2015 - 14:50

61

Views

Multiplicative linear functionals on subalgebras

Published on 28 Mar 2026 - 19:39

393

Views

Spectral projection and isolated point of spectrum

Published on 10 Apr 2015 - 21:04

86

Views

Are the solutions of a Sturm-Liouville equation entire in the spectral parameter?

Published on 14 Apr 2015 - 11:00

797

Views

Convergence of spectrum with multiplicity under norm convergence

Published on 15 Apr 2015 - 15:01

134

Views

What will happen if we try to reconstruct signal using phase only or magnitude only?

Published on 30 Mar 2026 - 12:22

627

Views

inverse of sum of diagonal matrix and eigendecomposition

Published on 29 Mar 2026 - 15:16

List Question

adjoint of an operator. on $L^2(0,1)$, $Bf(x)=\int_0^x f(t)dt$

Spectral convergence for collocation methods

Efficiently compute the eigenvectors of the Laplacian of a symmetric positive matrix

Making it possible to do a Fourier transform on it: $\frac{1}{(k+w)^2(a^2 +w^2)}$

Find the spectrum of the operator $T: \ell^2(\mathbb{C}) \to \ell^2(\mathbb{C})$ defined by $(Tx)_n = \frac{x_n}{n}$

Clustering with SVD

spectral theory expandable to arbitrary polynomials?

How is the Point Spectrum of a Compact Operator Countable?

A paradox derived from the open mapping theorem

Multiplicative linear functionals on subalgebras

Spectral projection and isolated point of spectrum

Are the solutions of a Sturm-Liouville equation entire in the spectral parameter?

Convergence of spectrum with multiplicity under norm convergence

What will happen if we try to reconstruct signal using phase only or magnitude only?

inverse of sum of diagonal matrix and eigendecomposition

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