List questions from hahn-banach-theorem

Published on 25 Mar 2026 - 20:09

424

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How can I prove this exercise using Hahn Banach theorem?

Published on 06 Nov 2022 - 16:35

116

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Find an extension of continuous linear functional that has a more large norm

Published on 12 Nov 2022 - 3:14

89

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Counterexample of 2nd geometric form of Hahn-Banach theorem

Published on 12 Nov 2022 - 20:24

343

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On the geometrical form of the Hahn-Banach theorem

Published on 13 Nov 2022 - 18:40

35

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Density of ``$c_0$-like" functionals in dual Banach spaces

Published on 15 Nov 2022 - 16:59

86

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Are separable normed spaces isometrically isomorphic to a subspace of $\ell_{\infty}$?

Published on 16 Nov 2022 - 13:56

259

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Let $Y$ be a closed subspace of normed space $X$. Prove that there exists $f \in X^*$ such that $f(Y)=0$ and $\|f\|=1$

Published on 25 Nov 2022 - 15:40

44

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Functional where only way to prove property is to make it "appear" after the property is proven

Published on 02 Dec 2022 - 1:10

149

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Functional Analysis proof of uniform convergence

Published on 07 Dec 2022 - 19:35

201

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Existence of Banach limits: Translation invariance

Published on 29 Dec 2022 - 23:53

235

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How to prove that the Hahn-Banach extension in this case is unique

Published on 30 Dec 2022 - 21:00

110

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Banach limit and extended limit

Published on 09 Jan 2023 - 19:32

166

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Proof verification that the Hahn Banach theorem equivalent to existence of a finitely additive measure for boolean algebra over ZF

Published on 10 Jan 2023 - 0:19

142

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Which Banach spaces admit medians?

Published on 10 Jan 2023 - 13:16

List Question

Is the moment problem a special case of the "functional problem"?

How can I prove this exercise using Hahn Banach theorem?

Find an extension of continuous linear functional that has a more large norm

Counterexample of 2nd geometric form of Hahn-Banach theorem

On the geometrical form of the Hahn-Banach theorem

Density of ``$c_0$-like" functionals in dual Banach spaces

Are separable normed spaces isometrically isomorphic to a subspace of $\ell_{\infty}$?

Let $Y$ be a closed subspace of normed space $X$. Prove that there exists $f \in X^*$ such that $f(Y)=0$ and $\|f\|=1$

Functional where only way to prove property is to make it "appear" after the property is proven

Functional Analysis proof of uniform convergence

Existence of Banach limits: Translation invariance

How to prove that the Hahn-Banach extension in this case is unique

Banach limit and extended limit

Proof verification that the Hahn Banach theorem equivalent to existence of a finitely additive measure for boolean algebra over ZF

Which Banach spaces admit medians?

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