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It is a commonplace in the foundations of physics, attributed to Kretschmann, that any local physical theory can be represented using arbitrary coordinates, simply by using tensor calculus. On the oth...
The history of general relativity suggests that in absence of experi-mental data, constructing a theory on philosophical first principles can lead to a very useful theory as well as to ground-breaking...
Leibniz's principle of identity of indiscernibles, formulated in modern logical terms, can be applied in a uniform way to all the exact physical symmetries, including the diffeomorphism group of gener...
How can we reconcile two claims that are now both widely accepted: Kretschmann's claim that a requirement of general covariance is physically vacuous and the standard view that the general covariance ...
Analysis of Emmy Noether’s 1918 theorems provides an illuminating method for testing the consequences of “coordinate generality”, and for exploring what else must be added to this requirement in order...
"The last remnant of physical objectivity of space-time"is disclosed, beyond the Leibniz equivalence, in the case of a continuous family of spatially non-compact models of general relativity. The "phy...
In his general theory of relativity (GR) Einstein sought togeneralize the special-relativistic equivalence of inertial frames to a principle according to which all frames of reference are equivalent. ...
The Anderson-Friedman absolute objects program has been a favorite analysis of the substantive general covariance that supposedly characterizes Einstein's General Theory of Relativity (GTR). Absolute ...

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