Question

Lim inf with norm and weak convergence[follow up]

score 117 · Answer 1 · 2026-04-11 11:14:19

117

Views

Lim inf with norm and weak convergence[follow up]

Published on 11 Apr 2026 - 11:14

score 35 · Answer 2 · 2026-03-25 20:41:59

35

Views

Assuming the violation of unitarity, what is logically possible?

Published on 25 Mar 2026 - 20:41

score 106 · Answer 3 · 2026-04-07 12:57:24

106

Views

Brezis' Exercise 5.29.2: a lemma of Grothendieck

Published on 07 Apr 2026 - 12:57

score 91 · Answer 4 · 2026-04-12 20:14:46

91

Views

Question about dense property in tensor product of Hilbert space

Published on 12 Apr 2026 - 20:14

score 49 · Answer 5 · 2026-04-06 06:18:23

49

Views

Brezis' Exercise 5.30.4: an orthonormal basis of $L^2(0, 1)$

Published on 06 Apr 2026 - 6:18

score 77 · Answer 6 · 2026-04-13 20:00:41

77

Views

Every finite rank operator on a Hilbert space can be written $\sum_{j=1}^n s_j|u_j\rangle\langle v_j|$ with $\{u_j\},\{v_j\}$ orthonormal

Published on 13 Apr 2026 - 20:00

score 32 · Answer 7 · 2026-04-12 17:18:33

32

Views

Moving a constant operator inside an operator valued integral: Why $A\int_{X}f(t)B(t)dt=\int_Xf(t)AB(t)dt, f:X\to\mathbb{C},A,B$ linear operators

Published on 12 Apr 2026 - 17:18

score 69 · Answer 8 · 2026-03-26 23:11:43

69

Views

How to prove that $a(u,v)=\int_0^1 u'v' dx$ is coercive

Published on 26 Mar 2026 - 23:11

score 222 · Answer 9 · 2026-03-25 15:59:05

222

Views

Weak equality equation with a negative fractional Sobolev space.

Published on 25 Mar 2026 - 15:59

score 36 · Answer 10 · 2026-04-11 16:30:02

36

Views

Complete orthonomal systems on function spaces

Published on 11 Apr 2026 - 16:30

score 109 · Answer 11 · 2026-03-25 11:00:45

109

Views

Hausdorff Distance Between Orthogonal Complements

Published on 25 Mar 2026 - 11:00

score 69 · Answer 12 · 2026-04-14 14:18:19

69

Views

Operator theory: nonnegative operator $Q$ less than an orthogonal projection $P$ satisfies $PQ=QP$

Published on 14 Apr 2026 - 14:18

score 65 · Answer 13 · 2026-04-12 14:09:09

65

Views

Using Hilbert projection theorem to prove properties of projection map

Published on 12 Apr 2026 - 14:09

score 50 · Answer 14 · 2026-04-12 02:24:29

50

Views

Norm of a Self-adjoint operator with respect to commutating projections

Published on 12 Apr 2026 - 2:24

score 25 · Answer 15 · 2026-03-27 02:36:04

25

Views

Why is $\left<u-P_mu,u_j\right>_V=0$ for $\left<.,.\right>_V=a(.,.) + t\left<.,.\right>_H$ and $a:V\times V\to\mathbb{R}$ a symmetric bilinear form

Published on 27 Mar 2026 - 2:36

List Question

Lim inf with norm and weak convergence[follow up]

Assuming the violation of unitarity, what is logically possible?

Brezis' Exercise 5.29.2: a lemma of Grothendieck

Question about dense property in tensor product of Hilbert space

Brezis' Exercise 5.30.4: an orthonormal basis of $L^2(0, 1)$

Every finite rank operator on a Hilbert space can be written $\sum_{j=1}^n s_j|u_j\rangle\langle v_j|$ with $\{u_j\},\{v_j\}$ orthonormal

Moving a constant operator inside an operator valued integral: Why $A\int_{X}f(t)B(t)dt=\int_Xf(t)AB(t)dt, f:X\to\mathbb{C},A,B$ linear operators

How to prove that $a(u,v)=\int_0^1 u'v' dx$ is coercive

Weak equality equation with a negative fractional Sobolev space.

Complete orthonomal systems on function spaces

Hausdorff Distance Between Orthogonal Complements

Operator theory: nonnegative operator $Q$ less than an orthogonal projection $P$ satisfies $PQ=QP$

Using Hilbert projection theorem to prove properties of projection map

Norm of a Self-adjoint operator with respect to commutating projections

Why is $\left<u-P_mu,u_j\right>_V=0$ for $\left<.,.\right>_V=a(.,.) + t\left<.,.\right>_H$ and $a:V\times V\to\mathbb{R}$ a symmetric bilinear form

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