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15
Math.TechQA.Club
2014-05-15 17:37:43
183
Views
The subspace sum of closed subspaces is closed
Published on
15 May 2014 - 17:37
#linear-algebra
#hilbert-spaces
19.6k
Views
Operator norm of orthogonal projection
Published on
16 May 2014 - 22:01
#real-analysis
#linear-algebra
#hilbert-spaces
124
Views
Inner product space or Hilbert space of Quaternionic Functions
Published on
28 Mar 2026 - 10:16
#hilbert-spaces
#inner-products
#quaternions
81
Views
I don't understand this notation
Published on
16 May 2014 - 22:57
#functional-analysis
#hilbert-spaces
835
Views
Nonseparable $L^2$ space built on a sigma finite measure space
Published on
17 May 2014 - 6:23
#general-topology
#analysis
#functional-analysis
#measure-theory
#hilbert-spaces
159
Views
Prove that if $X$ is a Hilbert space, then $B(X)$ is not a Hilbert space
Published on
18 May 2014 - 9:49
#hilbert-spaces
102
Views
Hilbert space without the projection theorem
Published on
30 Mar 2026 - 15:13
#linear-algebra
#hilbert-spaces
#axiom-of-choice
1.4k
Views
Is the image of a closed subspace under a bounded linear operator closed?
Published on
19 May 2014 - 17:41
#linear-algebra
#hilbert-spaces
190
Views
Is there a useful relationship between pointwise and $L^2$ distance?
Published on
20 May 2014 - 4:56
#real-analysis
#integration
#measure-theory
#hilbert-spaces
#normed-spaces
277
Views
Dual of $div$ on spaces where the tangential value is fixed
Published on
30 Mar 2026 - 16:25
#functional-analysis
#partial-differential-equations
#hilbert-spaces
#banach-spaces
61
Views
Normal bounded operator
Published on
29 Mar 2026 - 2:10
#analysis
#operator-theory
#hilbert-spaces
#c-star-algebras
165
Views
The relationship between CPTP maps and quadratic forms
Published on
20 May 2014 - 18:08
#linear-algebra
#hilbert-spaces
44
Views
Using derivatives at 0 to define an inner product
Published on
22 May 2014 - 3:33
#real-analysis
#hilbert-spaces
#taylor-expansion
#inner-products
128
Views
help,example about disjoint operators
Published on
26 Mar 2026 - 20:26
#functional-analysis
#operator-theory
#hilbert-spaces
#adjoint-operators
714
Views
Linear and monotone mapping
Published on
22 May 2014 - 21:02
#real-analysis
#analysis
#functional-analysis
#operator-theory
#hilbert-spaces
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