Rigidity and extensions of isometric maps
Part of the Progress in Mathematics book series (PM, volume 61)
We have seen in the first paragraphs of this lecture that the condition K ⩽ 0 often gives us inequalities and further equality implies a strong rigidity statement.
KeywordsGeodesic Segment Geodesic Curvature Convex Region Nonpositive Curvature Rigidity Result
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© Springer Science+Business Media New York 1985