Question

The composition of two unbounded linear operator is also unbounded or not?

score 62 · Answer 1 · 2026-04-13 20:56:28

62

Views

The composition of two unbounded linear operator is also unbounded or not?

Published on 13 Apr 2026 - 20:56

score 63 · Answer 2 · 2026-04-14 00:20:21

63

Views

An orthogonal system in an inner product space

Published on 14 Apr 2026 - 0:20

score 318 · Answer 3 · 2026-04-13 08:44:50

318

Views

How to compute the numerical radius of the right shift operator?

Published on 13 Apr 2026 - 8:44

score 28 · Answer 4 · 2026-04-14 11:30:30

28

Views

How is changing the boundary conditions a finite rank perturbation?

Published on 14 Apr 2026 - 11:30

score 47 · Answer 5 · 2026-04-14 22:20:02

47

Views

"Adjoint" of a Matrix

Published on 14 Apr 2026 - 22:20

score 23 · Answer 6 · 2026-04-13 17:46:37

23

Views

Matrix associated with linear transformations of the form $T(v):=\Sigma _{i=1}^ma_i\langle v,v_i\rangle w_i$

Published on 13 Apr 2026 - 17:46

score 17 · Answer 7 · 2026-03-25 11:16:04

17

Views

Brezis 5.28.2 About the competition of an orthogonal sequence

Published on 25 Mar 2026 - 11:16

score 40 · Answer 8 · 2026-04-08 23:59:31

40

Views

Projection operator which is not continuous

Published on 08 Apr 2026 - 23:59

score 52 · Answer 9 · 2026-04-15 09:12:30

52

Views

Showing that if $||Tx|| = ||T^x||$ in a $^$-subalgebra of the bounded operators of a hilbert space is commutative.

Published on 15 Apr 2026 - 9:12

score 31 · Answer 10 · 2026-04-11 20:49:13

31

Views

Proposition 4.4.12 Pederson Analysis Now, Why does this operator commute?

Published on 11 Apr 2026 - 20:49

score 48 · Answer 11 · 2026-04-09 00:01:15

48

Views

Let $f\colon H \to L(H,X)$ strongly continuous ($X,H$ Hilbert spaces). Is the adjoint function $f^*\colon H \to L(X,H)$ strongly continuous?

Published on 09 Apr 2026 - 0:01

score 57 · Answer 12 · 2026-04-10 23:58:45

57

Views

Does this group representation have a name? What are its properties?

Published on 10 Apr 2026 - 23:58

score 58 · Answer 13 · 2026-03-26 11:05:05

58

Views

Operator norm of powers of bounded normal operators and self adjoint operators on Hilbert space

Published on 26 Mar 2026 - 11:05

score 57 · Answer 14 · 2026-04-08 23:34:54

57

Views

Is true that $F(H)\otimes F(H)\cong F(H)$? where $F(H)$ is the full fock space of Hilbert space $H$

Published on 08 Apr 2026 - 23:34

score 25 · Answer 15 · 2026-04-13 17:13:30

25

Views

Examples of orthogonal function bases

Published on 13 Apr 2026 - 17:13

List Question

The composition of two unbounded linear operator is also unbounded or not?

An orthogonal system in an inner product space

How to compute the numerical radius of the right shift operator?

How is changing the boundary conditions a finite rank perturbation?

"Adjoint" of a Matrix

Matrix associated with linear transformations of the form $T(v):=\Sigma _{i=1}^ma_i\langle v,v_i\rangle w_i$

Brezis 5.28.2 About the competition of an orthogonal sequence

Projection operator which is not continuous

Showing that if $||Tx|| = ||T^x||$ in a $^$-subalgebra of the bounded operators of a hilbert space is commutative.

Proposition 4.4.12 Pederson Analysis Now, Why does this operator commute?

Let $f\colon H \to L(H,X)$ strongly continuous ($X,H$ Hilbert spaces). Is the adjoint function $f^*\colon H \to L(X,H)$ strongly continuous?

Does this group representation have a name? What are its properties?

Operator norm of powers of bounded normal operators and self adjoint operators on Hilbert space

Is true that $F(H)\otimes F(H)\cong F(H)$? where $F(H)$ is the full fock space of Hilbert space $H$

Examples of orthogonal function bases

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