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dc.contributor.authorKolassis, C.en
dc.contributor.authorLudwig, G.en
dc.date.accessioned2015-11-24T18:35:13Z-
dc.date.available2015-11-24T18:35:13Z-
dc.identifier.issn0217-751X-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/17062-
dc.rightsDefault Licence-
dc.subjectnullen
dc.titleSpace-times with a two-dimensional group of conformal motionsen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.secondary<Go to ISI>://A1996TU68800002-
heal.identifier.secondaryhttp://www.worldscinet.com/ijmpa/11/1105/S0217751X96000389.html-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιώνel
heal.publicationDate1996-
heal.abstractThe necessary and sufficient conditions for a space-time to admit a two-dimensional group of conformal motions (and, in particular, of homothetic motions) acting on nonnull orbits are found in the compacted spin-coefficient formalism. Although the discussion is restricted to the case of spacelike orbits, similar results are readily obtained for timelike orbits via the (modified) Sachs star operation. A number of theorems are obtained dealing with such topics as the Gaussian curvature of the group orbits, orthogonal transitivity, and hypersurface orthogonality of the conformal Killing vectors. A simple proof is presented of a generalization of a theorem due to Papapetrou.en
heal.journalNameInternational Journal of Modern Physics Aen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

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