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New posts in hilbert-spaces
Is the identity map $id: H^2(-\pi,\pi) \to L^2(-\pi,\pi)$ Hilbert-Schmidt?
functional-analysis
hilbert-spaces
Spanning set for $L^2(S^2)$?
hilbert-spaces
quantum-mechanics
spherical-harmonics
$W_0^{1,p}(\Omega)\neq W^{1,p}(\Omega)$
real-analysis
functional-analysis
hilbert-spaces
sobolev-spaces
Is compactness a stronger form of continuity?
general-topology
functional-analysis
hilbert-spaces
Transforming a distance function to a kernel
analysis
hilbert-spaces
machine-learning
Rademacher functions form an orthonormal system but not an orthonormal basis
functional-analysis
hilbert-spaces
lp-spaces
orthonormal
Direct sum of orthogonal subspaces
functional-analysis
hilbert-spaces
Explicit characterization of dual of $H^1$
real-analysis
functional-analysis
hilbert-spaces
sobolev-spaces
Confusion about the Hamel Basis
vector-spaces
hilbert-spaces
definition
hamel-basis
Every Hilbert space has an orthonomal basis - using Zorn's Lemma
functional-analysis
hilbert-spaces
axiom-of-choice
orthonormal
Show linear independence of a set of vectors close to an orthonormal basis
linear-algebra
hilbert-spaces
Can we infer that $\text{Im}(P)=S$ if $\Vert P(x)-x\Vert =\min\big\{\Vert y-x\Vert :y\in S\big\}$ for all $x\in H$? [closed]
functional-analysis
analysis
hilbert-spaces
inner-products
On existence of a bounded linear functional $f.$
functional-analysis
hilbert-spaces
Density of finite rank operator in compact operators on Hilbert spaces
functional-analysis
hilbert-spaces
compact-operators
Vector, Hilbert, Banach, Sobolev spaces
functional-analysis
vector-spaces
banach-spaces
hilbert-spaces
sobolev-spaces
Properties of reflexive Banach spaces
general-topology
functional-analysis
hilbert-spaces
banach-spaces
big-list
Why isn't every element of the spectrum an eigenvalue? (Where is the error in my proof?)
functional-analysis
eigenvalues-eigenvectors
hilbert-spaces
spectral-theory
An example of non-closed subspace of a Hilbert space?
functional-analysis
hilbert-spaces
Orthogonal projection on the Hilbert space .
linear-algebra
functional-analysis
hilbert-spaces
A problem with inner products on Hilbert space
functional-analysis
hilbert-spaces
inner-products
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