List questions from spectral-theory

Published on 11 Nov 2014 - 16:30

3k

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Spectrum of a nilpotent operator

Published on 15 Nov 2014 - 15:03

245

Views

Spectral methods with linear programming

Published on 25 Mar 2026 - 15:57

238

Views

Spectrum of Unitary Operators

Published on 17 Nov 2014 - 23:10

1k

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Pure Point Spectrum implies Spanning Eigenfunctions

Published on 19 Nov 2014 - 3:09

999

Views

Proof that the spectrum of an element of a Banach Algebra is non-empty

Published on 27 Mar 2026 - 6:42

5.7k

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Spectrum of Multiplication Operator $T$ in $C[0,1]$

Published on 24 Nov 2014 - 8:45

206

Views

Spectral Measures: Spectral Spaces (II)

Published on 24 Nov 2014 - 14:09

316

Views

Spectral decomposition - generalized eigenspaces

Published on 28 Mar 2026 - 0:06

78

Views

As $\lambda \to \infty$, $||R_{\lambda}(T)|| \to 0$

Published on 26 Nov 2014 - 16:16

245

Views

Show $\sigma(T)=\sigma{(\overline{T^{*}})}$

Published on 27 Mar 2026 - 0:02

32

Views

Showing self adjointness

Published on 27 Nov 2014 - 9:21

65

Views

Is the spectrum of a first order PDO always unbounded from both sides?

Published on 25 Mar 2026 - 8:00

4.8k

Views

Eigenvalue of a unilateral shift operator

Published on 29 Nov 2014 - 18:38

1.3k

Views

Derivative for eigenvalue with respect to 1st / 2nd / 3rd invariant of a matrix

Published on 29 Nov 2014 - 21:54

List Question

Eigenfunctions of a second derivative operator

Spectrum of a nilpotent operator

Spectral methods with linear programming

Spectrum of Unitary Operators

Pure Point Spectrum implies Spanning Eigenfunctions

Proof that the spectrum of an element of a Banach Algebra is non-empty

Spectrum of Multiplication Operator $T$ in $C[0,1]$

Spectral Measures: Spectral Spaces (II)

Spectral decomposition - generalized eigenspaces

As $\lambda \to \infty$, $||R_{\lambda}(T)|| \to 0$

Show $\sigma(T)=\sigma{(\overline{T^{*}})}$

Showing self adjointness

Is the spectrum of a first order PDO always unbounded from both sides?

Eigenvalue of a unilateral shift operator

Derivative for eigenvalue with respect to 1st / 2nd / 3rd invariant of a matrix

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