Addendum: Observables for General Relativity related to geometry
Abstract
In this addendum we clarify a point which strengthens one of the results from [the original paper]. Namely, we show that the algebra of the observables F(r,θ) is yet simpler then it was described in [the original paper]. This is an important point, because with this simplification an important subalgebra becomes canonical, allowing for a natural reduction of the phase space.
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