List questions from compact-operators

Published on 10 Apr 2026 - 18:43

127

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Fredholm alternative for polynomially compact operators

Published on 09 Apr 2026 - 6:57

472

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How to prove the compactness of this Sobolev embedding?

Published on 12 Apr 2026 - 16:35

1.7k

Views

$W^{1,p}$ compact in $L^\infty$?

Published on 15 Apr 2026 - 9:51

71

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Trying to show that operator $T((x_n))=(2^{-n}x_n)$ is compact.

Published on 16 Apr 2026 - 5:39

919

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Bounded operator and Compactness problem

Published on 09 Apr 2026 - 6:28

2k

Views

Spectral theorem of compact operators in Hilbert space

Published on 09 Apr 2026 - 18:13

247

Views

Weyl theorem, compact and relatively compact operators

Published on 12 Apr 2026 - 6:44

63

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$K(H)^{**}= B(H)$

Published on 13 Apr 2026 - 20:20

214

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Show that a Hibert-Schmidt operator is compact.

Published on 12 Apr 2026 - 23:06

429

Views

Equivalent condition to an operator $T$ on a complex Hilbert space being compact

Published on 14 Apr 2026 - 10:39

106

Views

Countability of the set of $t$ such that $E-tB$ is not injective

Published on 26 Mar 2026 - 12:37

26

Views

Sequence of projectors that does not converge

Published on 11 Apr 2026 - 14:45

400

Views

Compute the spectrum of non-compact operator?

Published on 11 Apr 2026 - 5:48

119

Views

Banach space operators: convergence result and invertibility

Published on 15 Apr 2026 - 6:16

List Question

Trying to prove that operator is compact

Fredholm alternative for polynomially compact operators

How to prove the compactness of this Sobolev embedding?

$W^{1,p}$ compact in $L^\infty$?

Trying to show that operator $T((x_n))=(2^{-n}x_n)$ is compact.

Bounded operator and Compactness problem

Spectral theorem of compact operators in Hilbert space

Weyl theorem, compact and relatively compact operators

$K(H)^{**}= B(H)$

Show that a Hibert-Schmidt operator is compact.

Equivalent condition to an operator $T$ on a complex Hilbert space being compact

Countability of the set of $t$ such that $E-tB$ is not injective

Sequence of projectors that does not converge

Compute the spectrum of non-compact operator?

Banach space operators: convergence result and invertibility

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