List questions from banach-algebras

65

Views

If $\mathcal C\subseteq C_b(E)$ is an algebra, $fe^{-\varepsilon f^2}$ can be approximated by functions from $\mathcal C$

Published on 27 Oct 2020 - 5:47

286

Views

Why is the space of $L^p$ (Fourier) multipliers a Banach space? (Stein)

Published on 26 Mar 2026 - 11:18

177

Views

Exercise on Spectrum of Commutative Elements in a Banach Algebra

Published on 26 Mar 2026 - 21:12

267

Views

Does every character $\phi$ on a Banach algebra satisfy $\|\phi\|=1$?

Published on 26 Mar 2026 - 21:07

86

Views

The set $\mathbb{C} \setminus \sigma(x)$ is connected.

Published on 31 Oct 2020 - 6:15

139

Views

Relation between the spectrum of a Banach algebra and the spectrum of its unitization.

Published on 31 Oct 2020 - 18:50

82

Views

Regarding supremum of Mobius distance with function values from the Disc algebra

Published on 01 Nov 2020 - 11:05

56

Views

Is a modular element of maximal ideal unique if it exists?

Published on 03 Nov 2020 - 15:12

93

Views

Representation of a closed ideal in $L^1(T)$.

Published on 08 Nov 2020 - 9:42

276

Views

$\sigma (xy) \subseteq \sigma (x)\sigma (y)$ in Banach algebra.

Published on 25 Mar 2026 - 14:23

272

Views

Trouble with the proof of Proposition 4.3.18 of Pedersen's Analysis Now

Published on 18 Nov 2020 - 13:38

194

Views

Is it possible turn the Dirichlet ring into a Banach algebra?

Published on 26 Mar 2026 - 2:54

215

Views

Positive elements in Hermitian * Banach Algebras

Published on 23 Nov 2020 - 18:16

68

Views

Ideal over a Banach algebra

Published on 25 Nov 2020 - 23:02

548

Views

When exactly is the character space of a Banach algebra empty?

Published on 23 Feb 2026 - 4:55

List Question

If $\mathcal C\subseteq C_b(E)$ is an algebra, $fe^{-\varepsilon f^2}$ can be approximated by functions from $\mathcal C$

Why is the space of $L^p$ (Fourier) multipliers a Banach space? (Stein)

Exercise on Spectrum of Commutative Elements in a Banach Algebra

Does every character $\phi$ on a Banach algebra satisfy $\|\phi\|=1$?

The set $\mathbb{C} \setminus \sigma(x)$ is connected.

Relation between the spectrum of a Banach algebra and the spectrum of its unitization.

Regarding supremum of Mobius distance with function values from the Disc algebra

Is a modular element of maximal ideal unique if it exists?

Representation of a closed ideal in $L^1(T)$.

$\sigma (xy) \subseteq \sigma (x)\sigma (y)$ in Banach algebra.

Trouble with the proof of Proposition 4.3.18 of Pedersen's Analysis Now

Is it possible turn the Dirichlet ring into a Banach algebra?

Positive elements in Hermitian * Banach Algebras

Ideal over a Banach algebra

When exactly is the character space of a Banach algebra empty?

Trending Questions

Popular # Hahtags

Popular Questions