Free falling particle (projective) geodesics "fill" light ray (conformal) geodesic light cone at any event e, forming a Weyl manifold as constructed in Ehlers-Pirani-Schild spacetime axiomatics.
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{{Information |Description=Free falling particle (projective) geodesics "fill" light ray (conformal) geodesic light cone, forming a Weyl manifold as constructed in Ehlers-Pirani-Schild spacetime axiomatics. |Source=Own work, created for intended Wikipedia