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- Publisher Website: 10.1007/s000130050223
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Article: Numerical radius preserving operators on C*-algebras
| Title | Numerical radius preserving operators on C*-algebras |
|---|---|
| Authors | |
| Issue Date | 1998 |
| Publisher | Birkhaeuser Verlag AG. The Journal's web site is located at http://www.link.springer.de/link/service/journals/00013/index.htm |
| Citation | Archiv Der Mathematik, 1998, v. 70 n. 6, p. 486-488 How to Cite? |
| Abstract | Let A be a unital C*-algebra. An element u of A is unitary and belongs to the centre of A if and only if φ(u) = 1 for every pure state φ. Using this fact we show that a numerical radius preserving linear isomorphism on A is a C*-isomorphism multiplied by a fixed unitary element in the centre of A. |
| Persistent Identifier | http://hdl.handle.net/10722/75236 |
| ISSN | 2023 Impact Factor: 0.5 2023 SCImago Journal Rankings: 0.455 |
| ISI Accession Number ID | |
| References |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Chan, JT | en_HK |
| dc.date.accessioned | 2010-09-06T07:09:13Z | - |
| dc.date.available | 2010-09-06T07:09:13Z | - |
| dc.date.issued | 1998 | en_HK |
| dc.identifier.citation | Archiv Der Mathematik, 1998, v. 70 n. 6, p. 486-488 | en_HK |
| dc.identifier.issn | 0003-889X | en_HK |
| dc.identifier.uri | http://hdl.handle.net/10722/75236 | - |
| dc.description.abstract | Let A be a unital C*-algebra. An element u of A is unitary and belongs to the centre of A if and only if φ(u) = 1 for every pure state φ. Using this fact we show that a numerical radius preserving linear isomorphism on A is a C*-isomorphism multiplied by a fixed unitary element in the centre of A. | en_HK |
| dc.language | eng | en_HK |
| dc.publisher | Birkhaeuser Verlag AG. The Journal's web site is located at http://www.link.springer.de/link/service/journals/00013/index.htm | en_HK |
| dc.relation.ispartof | Archiv der Mathematik | en_HK |
| dc.title | Numerical radius preserving operators on C*-algebras | en_HK |
| dc.type | Article | en_HK |
| dc.identifier.email | Chan, JT:jtchan@hkucc.hku.hk | en_HK |
| dc.identifier.authority | Chan, JT=rp00663 | en_HK |
| dc.description.nature | link_to_subscribed_fulltext | - |
| dc.identifier.doi | 10.1007/s000130050223 | - |
| dc.identifier.scopus | eid_2-s2.0-0032388568 | en_HK |
| dc.identifier.hkuros | 35085 | en_HK |
| dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0032388568&selection=ref&src=s&origin=recordpage | en_HK |
| dc.identifier.volume | 70 | en_HK |
| dc.identifier.issue | 6 | en_HK |
| dc.identifier.spage | 486 | en_HK |
| dc.identifier.epage | 488 | en_HK |
| dc.identifier.isi | WOS:000074550400010 | - |
| dc.publisher.place | Switzerland | en_HK |
| dc.identifier.scopusauthorid | Chan, JT=8246867400 | en_HK |
| dc.identifier.issnl | 0003-889X | - |