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math.DG2014
Strongly essential flows on irreducible parabolic geometries
Karin Melnick, Katharina Neusser
We study the local geometry of irreducible parabolic geometries admitting strongly essential flows; these are flows by local automorphisms with higher-order fixed points. We prove…
math.DG2014★ 5 cited
Quasihomogeneous three-dimensional real analytic Lorentz metrics do not exist
Sorin Dumitrescu, Karin Melnick
We show that a germ of a real analytic Lorentz metric on which is locally homogeneous on an open set containing the origin in its closure is necessarily locally homogen…