Newbetuts
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New posts in spectral-theory
Symmetries and eigenvalues of the Laplacian.
partial-differential-equations
eigenvalues-eigenvectors
spectral-theory
laplacian
Can an off-diagonal-negative matrix have both: a unique negative eigenvalue and a positive row-sum?
linear-algebra
matrices
eigenvalues-eigenvectors
spectral-theory
If $T$ is bounded and $F$ has finite rank, what is the spectrum of $T+F$?
functional-analysis
operator-theory
spectral-theory
Spectrum of the right shift operator on $\ell^2({\bf Z})$
functional-analysis
spectral-theory
Can spectrum "specify" an operator?
soft-question
functional-analysis
spectral-theory
What is spectrum for Laplacian in $\mathbb{R}^n$?
functional-analysis
reference-request
partial-differential-equations
eigenvalues-eigenvectors
spectral-theory
How to prove the resolvent of this operator is compact? [closed]
functional-analysis
operator-theory
compactness
spectral-theory
Confusion regarding real inner-products and the spectral theorem for symmetric matrices
inner-products
spectral-theory
orthogonal-matrices
Does $\sigma(T) = \{1\}$ and $\|T\| = 1$ imply that $T$ is the identity?
functional-analysis
operator-theory
spectral-theory
semigroup-of-operators
How to justify solving $f(x+1) + f(x) = g(x)$ using this spectral-like method?
real-analysis
functional-analysis
operator-theory
spectral-theory
banach-algebras
Spectrum of Indefinite Integral Operators
functional-analysis
spectral-theory
integral-equations
Example of a compact set that isn't the spectrum of an operator
functional-analysis
banach-spaces
spectral-theory
Separable measure space and diagonalization
measure-theory
operator-theory
spectral-theory
What is the difference between "singular value" and "eigenvalue"?
eigenvalues-eigenvectors
definition
spectral-theory
svd
singular-values
Redundancy in the definition of the resolvet set?
functional-analysis
normed-spaces
spectral-theory
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