List questions from banach-algebras

Published on 25 Mar 2026 - 12:52

633

Views

How to justify solving $f(x+1) + f(x) = g(x)$ using this spectral-like method?

Published on 23 Jun 2019 - 22:55

52

Views

Proof of a theorem for Banach Algebras

Published on 11 Jul 2019 - 0:34

148

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Gelfand transform and unitization misunderstanding?

Published on 23 Feb 2026 - 0:59

212

Views

Unital commutative Banach algebra $A$, $A/\operatorname{radical}(A)$ has no quasinilpotent elements

Published on 15 Jul 2019 - 19:53

283

Views

Fréchet -Differentiability on Banach Algebras

Published on 22 Jul 2019 - 8:01

295

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proof of spectrum of an element in any unital complex banach algebra is not empty

Published on 26 Aug 2019 - 21:29

79

Views

How did Lang deduce norm preserving here?

Published on 28 Aug 2019 - 23:04

737

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spectral radius in normed space is subadditive.

Published on 02 Sep 2019 - 11:53

177

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Dual space of quotient of C$^*$-algebras

Published on 18 Sep 2019 - 16:42

318

Views

What about $\ell^1$ with pointwise multiplication

Published on 19 Mar 2014 - 13:14

120

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Biprojective $C^*$-algebra

Published on 22 Mar 2014 - 15:13

2k

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Definition of subalgebra

Published on 25 Mar 2014 - 12:23

127

Views

Where is $b-\lambda \notin \mathrm{Inv}(A)$ used in this proof

Published on 25 Mar 2014 - 12:57

90

Views

How are these subalgbras

Published on 26 Mar 2014 - 9:03

List Question

Multiplicative Linear Functionals on a Banach Algebra

How to justify solving $f(x+1) + f(x) = g(x)$ using this spectral-like method?

Proof of a theorem for Banach Algebras

Gelfand transform and unitization misunderstanding?

Unital commutative Banach algebra $A$, $A/\operatorname{radical}(A)$ has no quasinilpotent elements

Fréchet -Differentiability on Banach Algebras

proof of spectrum of an element in any unital complex banach algebra is not empty

How did Lang deduce norm preserving here?

spectral radius in normed space is subadditive.

Dual space of quotient of C$^*$-algebras

What about $\ell^1$ with pointwise multiplication

Biprojective $C^*$-algebra

Definition of subalgebra

Where is $b-\lambda \notin \mathrm{Inv}(A)$ used in this proof

How are these subalgbras

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