59 citations · 142 across the 6 of their papers we have counts for
4 papers · 1 filter
A First-Principles Implementation of Scale Invariance Using Best Matching
Hans F. Westman
We present a first-principles implementation of spatial scale invariance as a local gauge symmetry in geometry dynamics using the method of best matching . In addition to the 3-met…
Coordinates, observables and symmetry in relativity
Hans Westman, Sebastiano Sonego
We investigate the interplay and connections between symmetry properties of equations, the interpretation of coordinates, the construction of observables, and the existence of phys…
Events and observables in generally invariant spacetime theories
Hans Westman, Sebastiano Sonego
We address the problem of observables in generally invariant spacetime theories such as Einstein's general relativity. Using the refined notion of an event as a ``point-coincidence…
Generalizing Optical Geometry
Rickard Jonsson, Hans Westman
We show that by employing the standard projected curvature as a measure of spatial curvature, we can make a certain generalization of optical geometry (Abramowicz and Lasota 1997,…