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arxiv: 0809.3602 · v1 · pith:ROYKEMGKnew · submitted 2008-09-21 · 🧮 math.DG · math-ph· math.MP

On projectively equivalent metrics near points of bifurcation

classification 🧮 math.DG math-phmath.MP
keywords metricseigenvalueslevi-civitametricnearotherpointpoints
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Let Riemannian metrics $g$ and $\bar g$ on a connected manifold $M^n$ have the same geodesics (considered as unparameterized curves). Suppose the eigenvalues of one metric with respect to the other are all different at a point. Then, by the famous Levi-Civita's Theorem, the metrics have a certain standard form near the point. Our main result is a generalization of Levi-Civita's Theorem for the points where the eigenvalues of one metric with respect to the other bifurcate.

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