Question

Coupling bra-ket notation to the definition of Hilbert space

score 190 · Answer 1 · 2026-04-11 16:42:04

190

Views

Coupling bra-ket notation to the definition of Hilbert space

Published on 11 Apr 2026 - 16:42

score 68 · Answer 2 · 2026-04-09 02:02:34

68

Views

Partial isometry in polar decomposition of self-adjoint operator is self-adjoint unitary

Published on 09 Apr 2026 - 2:02

score 33 · Answer 3 · 2026-04-15 10:58:32

33

Views

Orthogonal functions and Riemann sums

Published on 15 Apr 2026 - 10:58

score 90 · Answer 4 · 2026-04-16 16:01:10

90

Views

In von Neumann algebra, infimum of projections p and q is strong limit of (pq)^n

Published on 16 Apr 2026 - 16:01

score 25 · Answer 5 · 2026-03-25 12:48:34

25

Views

Does the origin have a strictly convex bounded neighborhood?

Published on 25 Mar 2026 - 12:48

score 44 · Answer 6 · 2026-04-14 00:57:50

44

Views

Show that $\langle Tx, y \rangle = i\langle x, Ty \rangle$ is bounded

Published on 14 Apr 2026 - 0:57

score 40 · Answer 7 · 2026-04-15 02:22:02

40

Views

Brezis' exercise 6.18.8: prove that the spaces $R(S_r \pm I)$ and $R(S_{\ell} \pm I)$ are dense and that they are not closed

Published on 15 Apr 2026 - 2:22

score 76 · Answer 8 · 2026-04-14 06:42:11

76

Views

Proving convergence of $|A| = \sqrt{A^*A}$ in the norm and strong operator topologies

Published on 14 Apr 2026 - 6:42

score 103 · Answer 9 · 2026-04-10 02:18:24

103

Views

Determine an operator on a Hilbert space based on a polynomial equation

Published on 10 Apr 2026 - 2:18

score 52 · Answer 10 · 2026-04-12 05:52:32

52

Views

Proving Operator Equaility with Polarization Identity

Published on 12 Apr 2026 - 5:52

score 50 · Answer 11 · 2026-04-13 00:21:59

50

Views

Indecomposable/Extreme Group Characters and Direct Sum Decompositions

Published on 13 Apr 2026 - 0:21

score 90 · Answer 12 · 2026-04-14 11:01:18

90

Views

Proving properties of Sobolev space $H^s(\mathbb{T})$ as a subset of $L^2([-\pi, \pi])$

Published on 14 Apr 2026 - 11:01

score 29 · Answer 13 · 2026-04-11 09:21:26

29

Views

Infinite Sum of Hilbert spaces is coproduct?

Published on 11 Apr 2026 - 9:21

score 85 · Answer 14 · 2026-04-14 15:40:13

85

Views

Reference Request: Direct Sum Decomposition of Unitary representations

Published on 14 Apr 2026 - 15:40

score 57 · Answer 15 · 2026-04-12 02:56:48

57

Views

Rank of a bounded linear operator on a Hilbert space, where a projection is involved

Published on 12 Apr 2026 - 2:56

List Question

Coupling bra-ket notation to the definition of Hilbert space

Partial isometry in polar decomposition of self-adjoint operator is self-adjoint unitary

Orthogonal functions and Riemann sums

In von Neumann algebra, infimum of projections p and q is strong limit of (pq)^n

Does the origin have a strictly convex bounded neighborhood?

Show that $\langle Tx, y \rangle = i\langle x, Ty \rangle$ is bounded

Brezis' exercise 6.18.8: prove that the spaces $R(S_r \pm I)$ and $R(S_{\ell} \pm I)$ are dense and that they are not closed

Proving convergence of $|A| = \sqrt{A^*A}$ in the norm and strong operator topologies

Determine an operator on a Hilbert space based on a polynomial equation

Proving Operator Equaility with Polarization Identity

Indecomposable/Extreme Group Characters and Direct Sum Decompositions

Proving properties of Sobolev space $H^s(\mathbb{T})$ as a subset of $L^2([-\pi, \pi])$

Infinite Sum of Hilbert spaces is coproduct?

Reference Request: Direct Sum Decomposition of Unitary representations

Rank of a bounded linear operator on a Hilbert space, where a projection is involved

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