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15
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Eigenfunctions of the operator $Au:=-u''+ix^2u$ in $L^2(\mathbb{R})$

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#functional-analysis #eigenvalues-eigenvectors #operator-theory #spectral-theory
143
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Help verifying the norm of the resolvent of a matrix

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#linear-algebra #functional-analysis #spectral-theory
210
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A Homogeneous Fredholm Equation of Second Kind

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#integration #functional-analysis #spectral-theory #integral-equations #eigenfunctions
48
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Definition of spectral measures corresponding to koopman operator

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#operator-theory #spectral-theory
75
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Trouble understand proof of spectral theorem

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#linear-algebra #eigenvalues-eigenvectors #spectral-theory
532
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How do we derive the spectral projector associated with a simple eigenvalue?

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#linear-algebra #markov-chains #spectral-theory #projection-matrices
237
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Quadratic Forms Orthogonal Diagonalization Existence

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#linear-algebra #spectral-theory #quadratic-forms
71
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Given two commuting projection-valued measures, is there a product measure?

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#measure-theory #operator-theory #spectral-theory
539
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Relation between Schatten-$p$-norm and $l^p$ norm of operator matrix

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#functional-analysis #operator-theory #spectral-theory #compact-operators
96
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Computation of the complex roots of the Laplace transform of a function?

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#numerical-methods #roots #laplace-transform #spectral-theory
212
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Point spectrum of an integral operator

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#functional-analysis #spectral-theory #integral-operators
49
Views

Proving that two variational problems are equivalent

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#partial-differential-equations #spectral-theory #calculus-of-variations #laplacian
26
Views

There is no T-invariant subspace $U$ such that $\mathbb{R}^{3} = W\oplus U$

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#linear-algebra #linear-transformations #spectral-theory
307
Views

How to prove Neumann series doesnt converge when spectral radius > 1?

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#normed-spaces #spectral-theory #spectral-radius
48
Views

what's spectral axiom

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#operator-algebras #spectral-theory #c-star-algebras #projection

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