List questions from compact-operators

Published on 09 Apr 2026 - 23:49

206

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Pitt's theorem and reflexivity

Published on 14 Apr 2026 - 14:21

919

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Convergence of eigenvalues for sequence of compressions of a compact operator

Published on 13 Apr 2026 - 1:33

63

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Prove that there $B : H\to H $ bounded such $ B^n = A $.

Published on 13 Apr 2026 - 21:36

429

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Is there a noncompact operator from $\ell^\infty$ to a reflexive space?

Published on 12 Apr 2026 - 8:52

205

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Compact operators

Published on 10 Apr 2026 - 7:45

274

Views

Compact integral operator

Published on 09 Apr 2026 - 1:55

465

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Is a Hilbert space $H$ compactly embedded in its dual?

Published on 08 Apr 2026 - 14:05

401

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Is $A$ a compact operator or not?

Published on 08 Apr 2026 - 23:29

371

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how to prove this property of compact operator？

Published on 10 Apr 2026 - 22:36

1.1k

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Is the limit of compact operators again compact?

Published on 08 Apr 2026 - 22:31

334

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Inequality for compact operator between Banach spaces

Published on 10 Apr 2026 - 4:02

304

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Want to show an operator is compact

Published on 11 Apr 2026 - 21:24

2.1k

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Invertibility of a linear operator on a Hilbert space.

Published on 08 Apr 2026 - 13:03

53

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Show that $f \in c_0^*$ and $||f||=\sum_{j=1}^{\infty} \frac{1}{j!}$

Published on 15 Apr 2026 - 23:02

List Question

How to show that the limit of compact operators in the operator norm topology is compact

Pitt's theorem and reflexivity

Convergence of eigenvalues for sequence of compressions of a compact operator

Prove that there $B : H\to H $ bounded such $ B^n = A $.

Is there a noncompact operator from $\ell^\infty$ to a reflexive space?

Compact operators

Compact integral operator

Is a Hilbert space $H$ compactly embedded in its dual?

Is $A$ a compact operator or not?

how to prove this property of compact operator？

Is the limit of compact operators again compact?

Inequality for compact operator between Banach spaces

Want to show an operator is compact

Invertibility of a linear operator on a Hilbert space.

Show that $f \in c_0^*$ and $||f||=\sum_{j=1}^{\infty} \frac{1}{j!}$

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