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Spectral measure of a unitary operator

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#functional-analysis #operator-theory #spectral-theory #c-star-algebras
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#functional-analysis #spectral-theory #banach-algebras
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#functional-analysis #hilbert-spaces #spectral-theory
305
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#functional-analysis #asymptotics #spectral-theory #laplacian
125
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Schrödinger Semigroup is compact if potential goes to infinity

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#functional-analysis #spectral-theory #quantum-mechanics #compact-operators #semigroup-of-operators
337
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#functional-analysis #hilbert-spaces #spectral-theory
107
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#functional-analysis #hilbert-spaces #spectral-theory
121
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#functional-analysis #hilbert-spaces #spectral-theory
471
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#functional-analysis #operator-theory #spectral-theory
428
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#functional-analysis #spectral-theory #banach-algebras
440
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For a Banach algebra $\mathcal{A}$ and an idempotent $e$, show that $\mathcal{A}e$ is a Banach algebra

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#functional-analysis #spectral-theory #banach-algebras
6.8k
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Proof of Gelfand formula for spectral radius

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#functional-analysis #spectral-theory #banach-algebras
351
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Is this some kind of Perron-Frobenius theorem?

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#linear-algebra #matrices #eigenvalues-eigenvectors #spectral-theory #matrix-decomposition
253
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Almost Mathieu operator

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#functional-analysis #spectral-theory
696
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Strong resolvent convergence and spectral measures

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#functional-analysis #operator-theory #hilbert-spaces #spectral-theory

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