Question

How to prove that inequality for every $f\in C^\infty_0(\Bbb{R})$.

score 111 · Answer 1 · 2026-04-29 12:08:00

111

Views

How to prove that inequality for every $f\in C^\infty_0(\Bbb{R})$.

Published on 29 Apr 2026 - 12:08

score 40 · Answer 2 · 2026-04-29 12:08:11

40

Views

Necessary condition for Hermician lin operators

Published on 29 Apr 2026 - 12:08

score 234 · Answer 3 · 2026-04-29 12:08:01

234

Views

Is it true that a functor from a locally small category with a left adjoint is representable?

Published on 29 Apr 2026 - 12:08

score 173 · Answer 4 · 2026-05-07 16:55:01

173

Views

Showing that these inner product induced norms are equivalent

Published on 07 May 2026 - 16:55

score 1.9k · Answer 5 · 2026-05-07 07:35:05

1.9k

Views

Do unitarily equivalent operators have the same spectrum?

Published on 07 May 2026 - 7:35

score 157 · Answer 6 · 2026-04-29 12:08:02

157

Views

Showing that $\inf_{\|x\|=1}\langle Tx,x\rangle$ and $\sup_{\|x\|=1}\langle Tx,x\rangle$ are eigenvalues of $T$ (in particular when they are $0$)

Published on 29 Apr 2026 - 12:08

score 68 · Answer 7 · 2026-04-29 12:08:26

68

Views

Let $T:\mathbb C^3\to\mathbb C^3$.Then, adjoint $T^*$ of $T$

Published on 29 Apr 2026 - 12:08

score 368 · Answer 8 · 2026-04-29 12:08:03

368

Views

Role of the interval for defining inner product and boundary conditions in Sturm Liouville problems.

Published on 29 Apr 2026 - 12:08

score 250 · Answer 9 · 2026-05-03 03:58:10

250

Views

Checking the well-definedness of an adjoint operator

Published on 03 May 2026 - 3:58

score 477 · Answer 10 · 2026-05-07 10:06:39

477

Views

Either a self-adjoint operator has $n$ eigenvector or not at all

Published on 07 May 2026 - 10:06

score 180 · Answer 11 · 2026-04-29 12:24:44

180

Views

Problems with adjoint operator

Published on 29 Apr 2026 - 12:24

score 222 · Answer 12 · 2026-04-29 12:28:13

222

Views

Prove that a regular $\phi : E \to E$ can be uniquely decomposed as a composition of self-adjoint map and a rotation(Unitary trick of Weyl)

Published on 29 Apr 2026 - 12:28

score 333 · Answer 13 · 2026-04-29 12:27:52

333

Views

weak operator topology convergence and the trace of spectral projections

Published on 29 Apr 2026 - 12:27

score 118 · Answer 14 · 2026-04-29 12:28:03

118

Views

For any $\phi$, is $\phi$ self-adjoint on $E_{\lambda_1} \oplus E_{\lambda_2} \oplus...\oplus E_{\lambda_k}$ if $\phi$ stable on $T$

Published on 29 Apr 2026 - 12:28

score 81 · Answer 15 · 2026-04-29 12:28:01

81

Views

Spectral Theorem for bounded selfadjoint operators

Published on 29 Apr 2026 - 12:28

List Question

How to prove that inequality for every $f\in C^\infty_0(\Bbb{R})$.

Necessary condition for Hermician lin operators

Is it true that a functor from a locally small category with a left adjoint is representable?

Showing that these inner product induced norms are equivalent

Do unitarily equivalent operators have the same spectrum?

Showing that $\inf_{\|x\|=1}\langle Tx,x\rangle$ and $\sup_{\|x\|=1}\langle Tx,x\rangle$ are eigenvalues of $T$ (in particular when they are $0$)

Let $T:\mathbb C^3\to\mathbb C^3$.Then, adjoint $T^*$ of $T$

Role of the interval for defining inner product and boundary conditions in Sturm Liouville problems.

Checking the well-definedness of an adjoint operator

Either a self-adjoint operator has $n$ eigenvector or not at all

Problems with adjoint operator

Prove that a regular $\phi : E \to E$ can be uniquely decomposed as a composition of self-adjoint map and a rotation(Unitary trick of Weyl)

weak operator topology convergence and the trace of spectral projections

For any $\phi$, is $\phi$ self-adjoint on $E_{\lambda_1} \oplus E_{\lambda_2} \oplus...\oplus E_{\lambda_k}$ if $\phi$ stable on $T$

Spectral Theorem for bounded selfadjoint operators

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