Excerpt - page 186: "... field geometry in the Galactic disk, well outside the Galactic center. A gentle curvature to many of the filaments is consistent with a possible ..."
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Excerpt - page 66: "... of geodesic coordinates, we can express the components of the curvature tensor in terms of the 2 jets of the metric, and we can express the 2 jets of the metric in terms of the components of the curvature tensor at the center of the coordinate system. ..."