Hannover 2003 – scientific programme

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GR: Gravitation und Relativitätstheorie

GR 4: Klassische Allgemeine Relativit
ätstheorie

GR 4.1: Fachvortrag

Tuesday, March 25, 2003, 14:00–14:20, A310

Four real lightlike vectors as a frame in general relativity and the Global Positioning System (GPS) — •Friedrich W. Hehl — Univ. zu Köln and Univ. of Missouri-Columbia, MO, USA. Email hehl@thp.uni-koeln.de

We define a symmetric null coframe consisting of four real null covectors. We show that this coframe is closely related to the GPS-type coordinates introduced recently by Rovelli, see Blagojević et al. and references given there: Phys. Rev. D65 (2002) 044018 and http://arXiv.org/abs/gr-qc/0110078v3 .