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1 paper

math.DG2024

A Gauss-Bonnet-Chern type obstruction for Killing vector fields on Lorentzian manifolds

Alfonso Romero, Miguel Sánchez

A new curvature obstruction to the existence of a timelike (resp. causal) Killing or homothetic vector field on an even-dimensional (odd-dimensional) Lorentzian manifold, in te…