The author studies the G\"odel Universe as the Lie group with left-invariant Lorentz metric. The expressions for timelike and isotropic geodesics in elementary functions are found by methods of geometric theory of optimal control for the search of geodesics on Lie groups with left-invariant (sub-)Lorentz metrics. It is proved that the G\"odel Universe has no closed timelike or isotropic geodesics.
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V. N. Berestovskiĭ (2024) studied this question.
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