I am reading a paper that uses but does not define the following concept: what is understood by "the Jacobian of the exponential map along a geodesic (beetween two points)"? Is this only defined for geodesics, or for general curves as well? Must the geodesics be length-minimizing?
2026-03-27 21:19:01.1774646341
The Jacobian of the exponential along a geodesic
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