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dc.provenanceCONICET-
dc.creatorAndruchow, Esteban-
dc.date2018-07-02T20:43:21Z-
dc.date2018-07-02T20:43:21Z-
dc.date2017-06-
dc.date2018-06-18T14:22:04Z-
dc.date.accessioned2019-04-29T15:41:39Z-
dc.date.available2019-04-29T15:41:39Z-
dc.date.issued2017-06-
dc.identifierAndruchow, Esteban; Geometry of the projective unitary group of a C*-algebra; Unión Matemática Argentina; Revista de la Unión Matemática Argentina; 58; 2; 6-2017; 319-329-
dc.identifier0041-6932-
dc.identifierhttp://hdl.handle.net/11336/50955-
dc.identifier1669-9637-
dc.identifierCONICET Digital-
dc.identifierCONICET-
dc.identifier.urihttp://rodna.bn.gov.ar:8080/jspui/handle/bnmm/299708-
dc.descriptionLet A be a C∗-algebra with a faithful state ϕ. It is proved thatthe projective unitary group P UA of A,P UA = UA/T.1,(UA denotes the unitary group of A) is a C∞-submanifold of the Banach spaceBs(A) of bounded operators acting in A, which are symmetric for the ϕ-innerproduct, and are usually called symmetrizable linear operators in A.A quotient Finsler metric is introduced in P UA, following the theory ofhomogeneous spaces of the unitary group of a C∗-algebra. Curves of minimallength with any given initial conditions are exhibited. Also it is proved that ifA is a von Neumann algebra (or more generally, an algebra where the unitarygroup is exponential) two elements in P UA can be joined by a minimal curve.In the case when A is a von Neumann algebra with a finite trace, theseminimality results hold for the quotient of the metric induced by the p-normof the trace (p ≥ 2), which metrizes the strong operator topology of P UA.-
dc.descriptionFil: Andruchow, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Argentino de Matemática Alberto Calderón; Argentina. Universidad Nacional de General Sarmiento. Instituto de Ciencias; Argentina-
dc.formatapplication/pdf-
dc.formatapplication/pdf-
dc.languageeng-
dc.publisherUnión Matemática Argentina-
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://www.inmabb.criba.edu.ar/revuma/pdf/v58n2/v58n2a11.pdf-
dc.rightsinfo:eu-repo/semantics/openAccess-
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/-
dc.sourcereponame:CONICET Digital (CONICET)-
dc.sourceinstname:Consejo Nacional de Investigaciones Científicas y Técnicas-
dc.sourceinstacron:CONICET-
dc.source.urihttp://hdl.handle.net/11336/50955-
dc.subjectC*-algebra-
dc.subjectprojective unitaries-
dc.subjectMatemática Pura-
dc.subjectMatemáticas-
dc.subjectCIENCIAS NATURALES Y EXACTAS-
dc.titleGeometry of the projective unitary group of a C*-algebra-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.typeinfo:ar-repo/semantics/articulo-
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