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Upper bounds for the Karlhede classification of type D vacuum spacetimes

J M Collins, R A d'Inverno and J A Vickers

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The authors show how the upper bound on the order of covariant differentiation of the Weyl spinor required to perform the Karlhede classification of a type D vacuum spacetime may be shown to be three, using a direct calculation in the GHP formalism.


PACS

04.20.-q Classical general relativity

02.10.-v Logic, set theory, and algebra

MSC

83Cxx General relativity

Subjects

Mathematical physics

Gravitation and cosmology

Dates

Issue 11 (November 1991)



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