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New posts in spectral-theory
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
Spectrum of a product of operators on a Banach space
functional-analysis
spectral-theory
Motivation of Adjoints and Normal Operators
linear-algebra
functional-analysis
analysis
operator-theory
spectral-theory
Spectrum $\sigma(a)$ taken within the unitisation of a $C^*$-algebra
functional-analysis
operator-algebras
spectral-theory
c-star-algebras
banach-algebras
why is the spectrum of the schrödinger operator discrete?
riemannian-geometry
spectral-theory
Singular-value inequalities
linear-algebra
functional-analysis
inequality
operator-theory
spectral-theory
The spectrum of a product of operators
functional-analysis
operator-theory
spectral-theory
Dimensionality in quantum mechanics
functional-analysis
mathematical-physics
spectral-theory
quantum-mechanics
unbounded-operators
How to use the Spectral Theorem to Derive $L^{2}(\mathbb{R})$ Fourier Transform Theory
functional-analysis
fourier-analysis
operator-theory
spectral-theory
Extension of the field of a matrix vector space
linear-algebra
spectral-theory
cayley-hamilton
Is $\int |x\rangle \langle x|dx$ Mathematical?
functional-analysis
hilbert-spaces
mathematical-physics
distribution-theory
spectral-theory
An approximate eigenvalue for $ T \in B(X) $.
functional-analysis
banach-spaces
eigenvalues-eigenvectors
hilbert-spaces
spectral-theory
Spectral decomposition of $-\Delta$ the Laplacian
functional-analysis
differential-geometry
reference-request
riemannian-geometry
spectral-theory
A hole in the distribution of eigenvalues - is this real?
eigenvalues-eigenvectors
matlab
spectral-theory
random-matrices
Spectrum of Multiplication Operator $T$ in $C[0,1]$
functional-analysis
spectral-theory
Spectral radius inequality
linear-algebra
operator-theory
spectral-theory
Find the spectrum of the linear operator $T: \ell^2 \to \ell^2$ defined by $Tx=(\theta x_{n-1} +(1-\theta)x_{n+1})_{n\in \mathbb{Z}}$
functional-analysis
operator-theory
spectral-theory
If $\lambda \in \partial \sigma (T)$ then $T - \lambda$ cannot be surjective.
functional-analysis
hilbert-spaces
spectral-theory
What is a resolvent of an operator?
functional-analysis
spectral-theory
Spectral representation intuitive explanation
functional-analysis
intuition
spectral-theory
compact-operators
adjoint-operators
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