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15
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The spectrum of the Hardy Banach algebra $(H^1(\mathbb{T}),+,*,\|\|_1)$.

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#spectral-theory #banach-algebras #hardy-spaces
44
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If $A$ is a random matrix, $B$ is a matrix very close to the all-one matrix, then is $\|A\circ B\|$ close to $\|A\|$?

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#linear-algebra #inequality #normed-spaces #spectral-theory #random-matrices
1.1k
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complex and real spectral theorem for matrices

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#matrices #eigenvalues-eigenvectors #spectral-theory
82
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spectral theorem : the case of bounded operator

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#operator-theory #hilbert-spaces #spectral-theory
704
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Why are nonzero eigenvalues of a compact operator poles of its resolvent?

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#functional-analysis #operator-theory #spectral-theory #compact-operators #meromorphic-functions
312
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Domain of the spectral resolution of a self-adjoint operator

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#functional-analysis #spectral-theory
2.7k
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The relationship between spectral decomposition / eigendecomposition and projection operators

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#linear-algebra #eigenvalues-eigenvectors #spectral-theory #matrix-decomposition #projection-matrices
57
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Existence of a spectral resolution

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#functional-analysis #spectral-theory
678
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Is there a positive-semidefinite convolution kernel, that is continuous at $0$ but discontinuous elsewhere?

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#functional-analysis #fourier-series #spectral-theory #lacunary-series #reproducing-kernel-hilbert-spaces
99
Views

product of a self-adjoint operator and a bounded operator, reference request

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#functional-analysis #reference-request #operator-theory #spectral-theory #unbounded-operators
307
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Bounded linear operator property and its spectral radius

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#functional-analysis #limits #spectral-theory
76
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Why a spectral resolution should be left-continuous?

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#functional-analysis #spectral-theory
235
Views

Discrete spectrum for sum of operators

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#functional-analysis #operator-theory #spectral-theory
69
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Spectral Invariants

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#functional-analysis #measure-theory #spectral-theory #ergodic-theory
115
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Hilbert-Schmidt operator defined by non-orthogonal basis

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#functional-analysis #hilbert-spaces #spectral-theory #compact-operators

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