Ext classes and embeddings for C*-algebras of graphs with sinks
| dc.creator | Tomforde, Mark | |
| dc.date | 2001-03-08 | |
| dc.date | 2001-11-06 | |
| dc.date.accessioned | 2026-07-07T04:40:34Z | |
| dc.date.available | 2026-07-07T04:40:34Z | |
| dc.description | We consider directed graphs E which have been obtained by adding a sink to a fixed graph G. We associate an element of Ext(C*(G)) to each such E, and show that the classes of two such graphs are equal in Ext(C*(G)) if and only if the associated C*-algebra of one can be embedded as a full corner in the C*-algebra of the other in a particular way. If every loop in G has an exit, then we are able to use this result to generalize some of the classification theorems of Raeburn, Tomforde, and Williams for C*-algebras of graphs with sinks. | |
| dc.description | 24 pages, uses XY-pic, New version comments: small typos fixed, to appear in New York J. Math | |
| dc.identifier | https://arxiv.org/abs/math/0103056 | |
| dc.identifier | http://arxiv.org/abs/math/0103056 | |
| dc.identifier | New York J. Math. 7 (2001), 233--256 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/61064 | |
| dc.subject | Operator Algebras | |
| dc.subject | 46L55 | |
| dc.title | Ext classes and embeddings for C*-algebras of graphs with sinks | |
| dc.type | text |