List questions from operator-theory

Published on 11 Mar 2018 - 7:54

25

Views

Adjoint maps of a strongly convergent maps also strongly convergent?

Published on 11 Mar 2018 - 16:55

308

Views

Relation between the support of spectral measure and proportionality of the identity operator

Published on 25 Mar 2026 - 0:07

405

Views

The definition of trace-class operators

Published on 25 Mar 2026 - 7:52

146

Views

to find the spectral measure $E : M_{\phi} \to B(H)$.

Published on 25 Mar 2026 - 17:39

96

Views

Perturbation of eigenvalues of Schrodinger Operator.

Published on 24 Mar 2026 - 23:45

242

Views

Does $P_2P_1 = P_2$ hold when $P_2$ and $P_1$ are orthogonal projections onto $M_2\subseteq M_1$

Published on 24 Mar 2026 - 22:08

1.1k

Views

Dual and bidual spaces of $B(H)$ in norm topology

Published on 25 Mar 2026 - 0:02

1.1k

Views

What is a semi-simple eigenvalue of a linear operator?

Published on 25 Mar 2026 - 11:22

63

Views

Prove that $T$ is bounded and onto.

Published on 13 Mar 2018 - 12:40

185

Views

Does for an operator on an Hilbert space symmetric, densley defined and bijective imply self adjoint?

Published on 25 Mar 2026 - 17:22

551

Views

Trying to understand how the Gelfand spectrum relates to the usual notion of spectrum of an operator?

Published on 22 Mar 2026 - 21:52

382

Views

Range of an integral operator

Published on 25 Mar 2026 - 6:26

95

Views

If $A,B$ are self-adjoint and $A+B\ge 0$, then $A_+-B_-,\ B_+-A_-\ge 0$?

Published on 25 Mar 2026 - 0:07

489

Views

Is the weak Laplacian under (homogeneous) Dirichlet and von Neumann boundary condition self-adjoint?

Published on 25 Mar 2026 - 8:10

List Question

About bounded below operators

Adjoint maps of a strongly convergent maps also strongly convergent?

Relation between the support of spectral measure and proportionality of the identity operator

The definition of trace-class operators

to find the spectral measure $E : M_{\phi} \to B(H)$.

Perturbation of eigenvalues of Schrodinger Operator.

Does $P_2P_1 = P_2$ hold when $P_2$ and $P_1$ are orthogonal projections onto $M_2\subseteq M_1$

Dual and bidual spaces of $B(H)$ in norm topology

What is a semi-simple eigenvalue of a linear operator?

Prove that $T$ is bounded and onto.

Does for an operator on an Hilbert space symmetric, densley defined and bijective imply self adjoint?

Trying to understand how the Gelfand spectrum relates to the usual notion of spectrum of an operator?

Range of an integral operator

If $A,B$ are self-adjoint and $A+B\ge 0$, then $A_+-B_-,\ B_+-A_-\ge 0$?

Is the weak Laplacian under (homogeneous) Dirichlet and von Neumann boundary condition self-adjoint?

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