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gr-qc1997★ 46 cited
Volume elements of spacetime and a quartet of scalar fields
Frank Gronwald, Uwe Muench, Alfredo Macías +1
Starting with a `bare' 4-dimensional differential manifold as a model of spacetime, we discuss the options one has for defining a volume element which can be used for physical theo…
gr-qc1997
A note on post-Riemannian structures of spacetime
Friedrich W. Hehl, Uwe Muench
A four-dimensional differentiable manifold is given with an arbitrary linear connection . Megged has claimed that he can define a metric by means of a…