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math.DG2017
Scalar conformal invariants of weight zero
Ignacio Sánchez-Rodríguez
In the class of metrics of a generic conformal structure there exists a distinguishing metric. This was noticed by Albert Einstein in a lesser-known paper of 1921 (Berl. Ber., 1921…
math.DG2017
An Approach to Differential Invariants of -Structures
Ignacio Sánchez-Rodríguez
In a natural way, the local diffeomorphisms of a manifold onto itself act on the reference frame bundles of any order and on the bundles associated with them. Due to the transitivi…