Differential Invariants and Symmetry: Riemannian metrics and beyond
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🧮 math.DG
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discussmetricsriemanniansymmetryactingbeyondcasediffeomorphisms
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We discuss Lie-Tresse theorem for the pseudogroup of diffeomorphisms acting on the space of (pseudo-)Riemannian metrics, and relate this to existence of Killing vector fields. Then we discuss the impact of symmetry in the general case.
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