Existence and directional uniqueness of ODD integral curves

Let (M,g)(M,\mathfrak{g}) be an ODD Riemannian manifold, let pMp\in M, and let XX be an ODD vector field without zeros. An ODD regular integral curve is a regular integral curve in the ODD sense.

Existence and directional uniqueness conjecture. There exists ϵ>0\epsilon>0 and at least one ODD regular integral curve γ ⁣:(ϵ,ϵ)M\gamma\colon(-\epsilon,\epsilon)\to M with γ(0)=p\gamma(0)=p. If γ\gamma and μ\mu are two integral curves through pp, and ϵ\epsilon is chosen small enough that γ\gamma and μ\mu are regular away from pp, then

limt0γ˙(t)γ˙(t)glimt0μ˙(t)μ˙(t)g.\lim_{t\to 0}\frac{\dot{\gamma}(t)}{|\dot{\gamma}(t)|_{\mathfrak{g}}}\neq\lim_{t\to 0}\frac{\dot{\mu}(t)}{|\dot{\mu}(t)|_{\mathfrak{g}}}.

The claim extends existence of integral curves beyond general points of maximal components, while allowing non-uniqueness in the usual parametrized sense; uniqueness is asserted through the limiting normalized directions. The surrounding discussion presents this as a conjectural extension, and no resolution is given.

Sources & referencesView supporting material

Primary source

Lukas Braun, “ODD Metrics”, arXiv:2211.12088 (2022).

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