Superstability for Generalized Module Left Derivations and Generalized Module Derivations on a Banach Module (I)

We discuss the superstability of generalized module left derivations and generalized module derivations on a Banach module. Let 𝒜 be a Banach algebra and X a Banach 𝒜-module, f:X→X and g:𝒜→𝒜. The mappings Δf,g1,&#x...

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Main Authors: Huai-Xin Cao, Ji-Rong Lv, J. M. Rassias
Format: Article
Language:English
Published: SpringerOpen 2009-01-01
Series:Journal of Inequalities and Applications
Online Access:http://dx.doi.org/10.1155/2009/718020
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author Huai-Xin Cao
Ji-Rong Lv
J. M. Rassias
author_facet Huai-Xin Cao
Ji-Rong Lv
J. M. Rassias
author_sort Huai-Xin Cao
collection DOAJ
description We discuss the superstability of generalized module left derivations and generalized module derivations on a Banach module. Let 𝒜 be a Banach algebra and X a Banach 𝒜-module, f:X→X and g:𝒜→𝒜. The mappings Δf,g1, Δf,g2, Δf,g3, and Δf,g4 are defined and it is proved that if ∥Δf,g1(x,y,z,w)∥ (resp., ∥Δf,g3(x,y,z,w,α,β)∥) is dominated by φ(x,y,z,w), then f is a generalized (resp., linear) module-𝒜 left derivation and g is a (resp., linear) module-X left derivation. It is also shown that if ∥Δf,g2(x,y,z,w)∥ (resp., ∥Δf,g4(x,y,z,w,α,β)∥) is dominated by φ(x,y,z,w), then f is a generalized (resp., linear) module-𝒜 derivation and g is a (resp., linear) module-X derivation.
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spelling doaj.art-6484b682950c4ea5a57616d6918f676b2022-12-22T01:11:14ZengSpringerOpenJournal of Inequalities and Applications1025-58341029-242X2009-01-01200910.1155/2009/718020Superstability for Generalized Module Left Derivations and Generalized Module Derivations on a Banach Module (I)Huai-Xin CaoJi-Rong LvJ. M. RassiasWe discuss the superstability of generalized module left derivations and generalized module derivations on a Banach module. Let 𝒜 be a Banach algebra and X a Banach 𝒜-module, f:X→X and g:𝒜→𝒜. The mappings Δf,g1, Δf,g2, Δf,g3, and Δf,g4 are defined and it is proved that if ∥Δf,g1(x,y,z,w)∥ (resp., ∥Δf,g3(x,y,z,w,α,β)∥) is dominated by φ(x,y,z,w), then f is a generalized (resp., linear) module-𝒜 left derivation and g is a (resp., linear) module-X left derivation. It is also shown that if ∥Δf,g2(x,y,z,w)∥ (resp., ∥Δf,g4(x,y,z,w,α,β)∥) is dominated by φ(x,y,z,w), then f is a generalized (resp., linear) module-𝒜 derivation and g is a (resp., linear) module-X derivation.http://dx.doi.org/10.1155/2009/718020
spellingShingle Huai-Xin Cao
Ji-Rong Lv
J. M. Rassias
Superstability for Generalized Module Left Derivations and Generalized Module Derivations on a Banach Module (I)
Journal of Inequalities and Applications
title Superstability for Generalized Module Left Derivations and Generalized Module Derivations on a Banach Module (I)
title_full Superstability for Generalized Module Left Derivations and Generalized Module Derivations on a Banach Module (I)
title_fullStr Superstability for Generalized Module Left Derivations and Generalized Module Derivations on a Banach Module (I)
title_full_unstemmed Superstability for Generalized Module Left Derivations and Generalized Module Derivations on a Banach Module (I)
title_short Superstability for Generalized Module Left Derivations and Generalized Module Derivations on a Banach Module (I)
title_sort superstability for generalized module left derivations and generalized module derivations on a banach module i
url http://dx.doi.org/10.1155/2009/718020
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