1302.1846 (Andrzej Borowiec et al.)

Geometry of almost-product Lorentzian manifolds and relativistic
observer    [PDF]

Andrzej Borowiec, Aneta Wojnar

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.

View original: http://arxiv.org/abs/1302.1846