Dilation theorems for VH-spaces

buir.advisorGheondea, Aurelian
dc.contributor.authorUğurcan, Barış Evren
dc.date.accessioned2016-01-08T18:17:27Z
dc.date.available2016-01-08T18:17:27Z
dc.date.issued2009
dc.departmentDepartment of Mathematicsen_US
dc.descriptionAnkara : The Department of Mathematics and the Institute of Engineering and Sciences of Bilkent University, 2009.en_US
dc.descriptionThesis (Master's) -- Bilkent University, 2009.en_US
dc.descriptionIncludes bibliographical references leaves 45-46.en_US
dc.description.abstractIn the Appendix of the book Le¸cons d’analyse fonctionnelle by F. Riesz and B. Sz.-Nagy, B. Sz.-Nagy [15] proved an important theorem on operator valued positive definite maps on ∗-semigroups, which today can be considered as one of the pioneering results of dilation theory. In the same year W.F. Stinespring [11] proved another celebrated theorem about dilation of operator valued completely positive linear maps on C ∗ -algebras. Then F.H. Szafraniec [14] showed that these theorems are actually equivalent. Due to reasons coming from multivariate stochastic processes R.M. Loynes [7], considered a generalization of B. Sz.-Nagy’s Theorem for vector Hilbert spaces (that he called VH-spaces). These VH-spaces have “inner products” that are vector valued, into the so-called “admissible spaces”. This work is aimed at providing a detailed proof of R.M. Loynes Theorem that generalizes B. Sz.-Nagy, a detailed proof of the equivalence of Stinespring’s Theorem in the Arveson formulation [2] for B∗ -algebras with B. Sz.-Nagy’s Theorem following the lines in [14] together with some ideas from [2], and to get VHvariants of Stinespring’s Theorem for C ∗ -algebras and B∗ -algebras. Relations between these theorems are also considered.en_US
dc.description.degreeM.S.en_US
dc.description.statementofresponsibilityUğurcan, Barış Evrenen_US
dc.format.extentv, 46 leavesen_US
dc.identifier.urihttp://hdl.handle.net/11693/15359
dc.language.isoEnglishen_US
dc.publisherBilkent Universityen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectC-Algebrasen_US
dc.subjectVH-Spacesen_US
dc.subjectCompletely positive mapsen_US
dc.subjectDilationen_US
dc.subject.lccQA326 .U48 2009en_US
dc.subject.lcshC*-algebras.en_US
dc.subject.lcshOperator algebras.en_US
dc.subject.lcshDilation theory (Operator theory)en_US
dc.subject.lcshMappings (Mathematics)en_US
dc.titleDilation theorems for VH-spacesen_US
dc.typeThesisen_US

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