HIGHLIGHTS
- who: Gordon Liu from the Copernicus Institute for Physics and Astronomy, Toronto, Canada have published the paper: Riemannian Space-Time, de Donder Conditions and Gravitational Field in Flat Space-Time, in the Journal: (JOURNAL)
- what: This paper is intended to answer above quesIJAA tions. Gravitation Field First of all, the authors investigate the gravitation field by taking Cartesian coordinates in an inertial reference frame.
SUMMARY
In those theories, some authors assume that two metric tensors, the Riemannian space-time and flat background space-time, exist at the same time; while others . . .
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