Results 11 to 20 of about 4,562 (230)

Hyers Stability and Multi-Fuzzy Banach Algebra [PDF]

open access: yesMathematics, 2021
In this paper, we define multi-fuzzy Banach algebra and then prove the stability of involution on multi-fuzzy Banach algebra by fixed point method. That is, if f:A→A is an approximately involution on multi-fuzzy Banach algebra A, then there exists an ...
Parvaneh Lo′lo′   +2 more
doaj   +2 more sources

On Fully Stable Banach Algebra Modules and Fully Pesudo Stable Banach Algebra Modules

open access: yesمجلة بغداد للعلوم, 2018
The concept of fully pseudo stable Banach Algebra-module (Banach A-module) which is the generalization of fully stable Banach A-module has been introduced.
Baghdad Science Journal
doaj   +4 more sources

F-cone metric spaces over Banach algebra

open access: yesFixed Point Theory and Applications, 2017
The paper deals with the achievement of introducing the notion of F-cone metric spaces over Banach algebra as a generalization of N p $N_{p}$ -cone metric space over Banach algebra and N b $N_{b}$ -cone metric space over Banach algebra and studying some ...
Jerolina Fernandez   +3 more
doaj   +2 more sources

An amalgamation of the Banach spaces associated with James and Schreier, Part I : Banach-space structure. [PDF]

open access: yes, 2010
We create a new family of Banach spaces, the James-Schreier spaces, by amalgamating two important classical Banach spaces: James' quasi-reflexive Banach space on the one hand and Schreier's Banach space giving a counterexample to the Banach-Saks property
Alistair Bird   +3 more
core   +1 more source

Tensor products of commutative Banach algebras

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1982
Let A1, A2 be commutative semisimple Banach algebras and A1⊗∂A2 be their projective tensor product. We prove that, if A1⊗∂A2 is a group algebra (measure algebra) of a locally compact abelian group, then so are A1 and A2. As a consequence, we prove that,
U. B. Tewari, M. Dutta, Shobha Madan
doaj   +1 more source

Left Ideals of Banach Algebras and Dual Banach Algebras [PDF]

open access: yes, 2020
We investigate topologically left Noetherian Banach algebras. We show that if $G$ is a compact group, then $L^{\, 1}(G)$ is topologically left Noetherian if and only if $G$ is metrisable. We prove that, given a Banach space $E$ such that $E'$ has BAP, the algebra of compact operators $\mathcal{K}(E)$ is topologically left Noetherian if and only if $E'$
openaire   +2 more sources

Ultrapowers of Banach Algebras

open access: yesVestnik St. Petersburg University, Mathematics, 2022
In this paper, we consider ultrapowers of Banach algebras as Banach algebras and the product (J,U) on the second dual of Banach algebras. For a Banach algebra A, we show that if there is a continuous derivation from A into itself, then there is a continuous derivation from (A**,(J,U)) into it.
Ebadian, Ali, Jabbari, Ali
openaire   +1 more source

Continuity of homomorphisms and derivations from algebras of approximable and nuclear operators [PDF]

open access: yes, 1994
1. Let be a Banach algebra. We say that homomorphisms from are continuous if every homomorphism from into a Banach algebra is automatically continuous, and that derivations from are continuous if every derivation from into a Banach -bimodule is ...
Dales, H.G.   +3 more
core   +1 more source

Dislocated cone metric space over Banach algebra and α-quasi contraction mappings of Perov type

open access: yesFixed Point Theory and Applications, 2017
A dislocated cone metric space over Banach algebra is introduced as a generalisation of a cone metric space over Banach algebra as well as a dislocated metric space. Fixed point theorems for Perov-type α-quasi contraction mapping, Kannan-type contraction
Reny George   +3 more
doaj   +1 more source

Ring homomorphisms on real Banach algebras

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
Let B be a strictly real commutative real Banach algebra with the carrier space ΦB. If A is a commutative real Banach algebra, then we give a representation of a ring homomorphism ρ:A→B, which needs not be linear nor continuous.
Takeshi Miura, Sin-Ei Takahasi
doaj   +1 more source

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