Projection pencil of quadrics and Ivory theorem

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dc.creatorHorváth, Ákos G.
dc.date2009-05-25
dc.date.accessioned2026-07-07T13:18:09Z
dc.date.available2026-07-07T13:18:09Z
dc.descriptionWe rewrite the property of confocality with respect to a pseudo-Euclidean space. Our observation is that the generalized definition of confocality in $\cite{stachel}$ does not give back to the original definition of confocality of Euclidean conics. The "confocality property" of $\cite{stachel}$ can be get from our definition in the case when the projection transformation is regular, it is the identity transformation of the space. Our examination concentrate to the singular cases, too because they are playing important role in the investigations of essential examples.
dc.description14 pages
dc.identifierhttps://arxiv.org/abs/0905.4093
dc.identifierhttp://arxiv.org/abs/0905.4093
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/231340
dc.subjectMetric Geometry
dc.subjectMathematical Physics
dc.subject51M10, 15A21
dc.titleProjection pencil of quadrics and Ivory theorem
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