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Diff — Triangle inequality

Revision #1641 → #1809 · back to history

modifiedShortest curve is a straight line18e53e76fa4a
FieldFrom #1641To #1809
mathlib.declriemannianEDist_le_pathELengthManifold.riemannianEDist_le_pathELength
noteriemannianEDist_le_pathELength shows the geodesic (Riemannian) distance lower-bounds any C¹ path length, capturing the curve-minimization idea but not the specific Euclidean straight-line characterization.Manifold.riemannianEDist_le_pathELength shows the Riemannian distance lower-bounds any C¹ path length, capturing the curve-minimization idea but not the specific Euclidean straight-line characterization.
addedReverse triangle inequality (metric)c5c144713783