A 4-cycle algebra is a finite-dimensional digraph algebra (CSL algebra) whose reduced digraph is a 4-cycle. A rigid embedding between such algebras is a direct sum of certain nondegenerate multiplicity one star-extendible embeddings. A complete classification is obtained for the regular isomorphism
โฆ LIBER โฆ
Homology for Operator Algebras I. Spectral Homology for Reflexive Algebras
โ Scribed by S.C. Power
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 1023 KB
- Volume
- 131
- Category
- Article
- ISSN
- 0022-1236
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Suppose b 1 , ..., b n are self-adjoint elements in a finite von Neumann algebra M with trace { and define a map 9 from M to complex (n+1)-space by the formula 9(x)=({(x), {(b 1 x), ..., {(b n x)). Next let B denote the image of the positive unit ball of M under the map 9. B is called the spectral s