Question

Finding spectrum of given operator

score 806 · Answer 1 · 2026-03-25 06:10:00

806

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Finding spectrum of given operator

Published on 25 Mar 2026 - 6:10

score 132 · Answer 2 · 2026-03-22 09:20:05

132

Views

Books on ergodic operators

Published on 22 Mar 2026 - 9:20

score 104 · Answer 3 · 2026-03-25 04:39:02

104

Views

Explain a proof from a paper: why the inequality $b<\|A\|$ is strict?

Published on 25 Mar 2026 - 4:39

score 89 · Answer 4 · 2026-03-24 22:07:34

89

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Is the map $T: C(X) \to \mathbb{B}(L^2(X,\nu))$ defined by $T(f)=M_f$, where $M_f(g)=fg$, injective?

Published on 24 Mar 2026 - 22:07

score 1.3k · Answer 5 · 2018-02-03 21:21:44

1.3k

Views

Singular value decomposition of a compact operator, using matrix notation

Published on 03 Feb 2018 - 21:21

score 59 · Answer 6 · 2026-03-25 03:21:57

59

Views

Is : $\frac{dx}{\partial{x}}=1$ and what does it mean :$\frac{{\partial}}{d}$ or $ \frac{d}{\partial} $?

Published on 25 Mar 2026 - 3:21

score 242 · Answer 7 · 2026-03-22 19:36:59

242

Views

Checking the well-definedness of an adjoint operator

Published on 22 Mar 2026 - 19:36

score 49 · Answer 8 · 2026-03-25 06:12:58

49

Views

Conditions such that $f\leq g$ implies $FourierSeries(f)\leq FourierSeries(g)$

Published on 25 Mar 2026 - 6:12

score 79 · Answer 9 · 2018-02-05 11:30:04

79

Views

Vector-valued functionals?

Published on 05 Feb 2018 - 11:30

score 85 · Answer 10 · 2026-03-25 08:13:44

85

Views

Calculate the spectra for $T: l_2(\mathbb{N}) \to l_2(\mathbb{N})$ defined by $Tx = \left( \frac{n-1}{n+1} x_n \right)_{n}$

Published on 25 Mar 2026 - 8:13

score 807 · Answer 11 · 2026-03-25 08:09:45

807

Views

Why denote the spectral decomposition of a bounded operator as an integral?

Published on 25 Mar 2026 - 8:09

score 131 · Answer 12 · 2026-03-22 07:38:38

131

Views

Characterizing families of $p^2$ orthogonal $p \times p$ unitaries?

Published on 22 Mar 2026 - 7:38

score 66 · Answer 13 · 2026-03-25 06:06:49

66

Views

Norm of linear operator $T(f) = \pi \int_0^{\pi} f(x)\,dx + i/2 \int_\pi^{2\pi} f(x)/x \,dx$

Published on 25 Mar 2026 - 6:06

score 152 · Answer 14 · 2026-03-25 06:04:27

152

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Non-continuous linear functional over polynomials with inner product $\langle f,g \rangle = \int_{0}^{1} f(x)g(x)dx$

Published on 25 Mar 2026 - 6:04

score 87 · Answer 15 · 2026-03-20 05:52:57

87

Views

An embedding from the $C(X) \rtimes_{\alpha,r}\Gamma$ into $L^{\infty}(X) \ltimes \Gamma$.

Published on 20 Mar 2026 - 5:52

List Question

Finding spectrum of given operator

Books on ergodic operators

Explain a proof from a paper: why the inequality $b<\|A\|$ is strict?

Is the map $T: C(X) \to \mathbb{B}(L^2(X,\nu))$ defined by $T(f)=M_f$, where $M_f(g)=fg$, injective?

Singular value decomposition of a compact operator, using matrix notation

Is : $\frac{dx}{\partial{x}}=1$ and what does it mean :$\frac{{\partial}}{d}$ or $ \frac{d}{\partial} $?

Checking the well-definedness of an adjoint operator

Conditions such that $f\leq g$ implies $FourierSeries(f)\leq FourierSeries(g)$

Vector-valued functionals?

Calculate the spectra for $T: l_2(\mathbb{N}) \to l_2(\mathbb{N})$ defined by $Tx = \left( \frac{n-1}{n+1} x_n \right)_{n}$

Why denote the spectral decomposition of a bounded operator as an integral?

Characterizing families of $p^2$ orthogonal $p \times p$ unitaries?

Norm of linear operator $T(f) = \pi \int_0^{\pi} f(x)\,dx + i/2 \int_\pi^{2\pi} f(x)/x \,dx$

Non-continuous linear functional over polynomials with inner product $\langle f,g \rangle = \int_{0}^{1} f(x)g(x)dx$

An embedding from the $C(X) \rtimes_{\alpha,r}\Gamma$ into $L^{\infty}(X) \ltimes \Gamma$.

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