Geometry of almost-product Lorentzian manifolds and relativistic observer

Published 7 Feb 2013 in gr-qc, math-ph, math.DG, and math.MP | (1302.1846v3)

Abstract: The notion of relativistic observer is confronted with Naveira's classification of (pseudo-)Riemannian almost-product structures on space-time manifolds. Some physical properties and their geometrical counterparts are shortly discussed.

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