New functions cosh_Ω and sinh_Ω are introduced, and explicit formulas for sub-Lorentzian and Finsler extremals on 3D unimodular Lie groups and the Lobachevsky plane are derived.
Explicit Formulae for Geodesics in Left–Invariant Sub–Finsler Problems on Heisenberg Groups via Convex Trigonometry
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Explicit formulas for extremals in sub-Lorentzian and Finsler problems on 2- and 3-dimensional Lie groups
New functions cosh_Ω and sinh_Ω are introduced, and explicit formulas for sub-Lorentzian and Finsler extremals on 3D unimodular Lie groups and the Lobachevsky plane are derived.