The compression theorem I


This the first of a set of three papers about the Compression Theorem: if M is embedded in Q ×R with a normal vector field and if q−m ≥ 1, then the given vector field can be straightened (ie, made parallel to the given R direction) by an isotopy of M and normal field in Q× R. The theorem can be deduced from Gromov’s theorem on directed embeddings [5; 2.4.5… (More)


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