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Banach-algebras
New post in Banach-algebras
On the spectrum of the sum of two commuting elements in a Banach algebra
August 1st, 2022
functional-analysis
abstract-algebra
banach-algebras
Looking for an easy lightning introduction to Hilbert spaces and Banach spaces
August 1st, 2022
operator-theory
functional-analysis
reference-request
banach-algebras
self-learning
Closure of the invertible operators on a Banach space
April 30th, 2020
functional-analysis
operator-theory
banach-algebras
banach-spaces
Why is $\ell^1(\mathbb{Z})$ not a $C^{*}$-algebra?
August 1st, 2022
functional-analysis
c-star-algebras
banach-algebras
banach-spaces
Is there an algebraic homomorphism between two Banach algebras which is not continuous?
August 1st, 2022
functional-analysis
set-theory
operator-algebras
banach-algebras
Liouville's theorem for Banach spaces without the Hahn-Banach theorem?
August 1st, 2022
complex-analysis
functional-analysis
banach-spaces
banach-algebras
The identity cannot be a commutator in a Banach algebra?
January 16th, 2020
banach-algebras
functional-analysis
Can one deduce Liouville's theorem (in complex analysis) from the non-emptiness of spectra in complex Banach algebras?
August 1st, 2022
banach-algebras
complex-analysis
Locally Compact Stone-Weierstrass Theorem
August 1st, 2022
banach-algebras
general-topology
analysis
functional-analysis
Reference request: Fourier and Fourier-Stieltjes algebras
August 1st, 2022
reference-request
locally-compact-groups
harmonic-analysis
functional-analysis
banach-algebras
Non-$C^{*}$ Banach algebras?
August 1st, 2022
operator-algebras
functional-analysis
banach-algebras
Spectrum of idempotent element
August 1st, 2022
spectral-theory
linear-algebra
functional-analysis
banach-algebras
idempotents
Prove that the set of invertible elements in a Banach algebra is open
August 1st, 2022
banach-algebras
general-topology
vector-spaces
inverse
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