Algebraic and Strong Splittings of Extensions of Banach Algebras.

Bade, W. G., H. G. Dales und Z. A. Lykova:

ISBN 10: 0821810588 / ISBN 13: 9780821810583

Published by Amer Mathematical Society, 1999

About this Item

113 S. Ex-library with stamp and library-signature in good condition, some traces of use. C-00897 9780821810583 Sprache: Englisch Gewicht in Gramm: 150.

Seller Inventory # 2484737

Bibliographic Details

• Title: Algebraic and Strong Splittings of Extensions of Banach Algebras.
• Publisher: Amer Mathematical Society
• Publication Date: 1999
• Language: English
• ISBN 10: 0821810588
• ISBN 13: 9780821810583
• Binding: Softcover
• Weight: 150 grams
• Seller catalogs:
  • SA MATHEMATIK

About this title

Synopsis

In this volume, the authors address the following:

Let $A$ be a Banach algebra, and let $\sum\:\ 0\rightarrow I\rightarrow\mathfrak A\overset\pi\to\longrightarrow A\rightarrow 0$ be an extension of $A$, where $\mathfrak A$ is a Banach algebra and $I$ is a closed ideal in $\mathfrak A$. The extension splits algebraically (respectively, splits strongly) if there is a homomorphism (respectively, continuous homomorphism) $\theta\: A\rightarrow\mathfrak A$ such that $\pi\circ\theta$ is the identity on $A$.

Consider first for which Banach algebras $A$ it is true that every extension of $A$ in a particular class of extensions splits, either algebraically or strongly, and second for which Banach algebras it is true that every extension of $A$ in a particular class which splits algebraically also splits strongly.

These questions are closely related to the question when the algebra $\mathfrak A$ has a (strong) Wedderburn decomposition. The main technique for resolving these questions involves the Banach cohomology group $\mathcal H^2(A,E)$ for a Banach $A$-bimodule $E$, and related cohomology groups.

Later chapters are particularly concerned with the case where the ideal $I$ is finite-dimensional. Results are obtained for many of the standard Banach algebras $A$.