Closability of Module σ−Derivatoins

Let σ be a linear mapping from a dense subalgebra A of a Banach algebra B into B. In this note, we study the closability of a module σ− derivation δ from A into a B− bimodule M. Applying the notions of torsion-free modules and essential ideals, we present several results concerning the closabili...

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Bibliographic Details
Main Authors: M. Mosadeq∗, M. Hassan, A. Niknam
Format: Article
Language:English
Published: Islamic Azad University 2012-03-01
Series:Journal of Mathematical Extension
Online Access:http://ijmex.com/index.php/ijmex/article/view/97