Remarks on the topology of folds

Remarks on the topology of folds
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by Shigeki Kikuchi and Osamu Saeki PDF

Proc. Amer. Math. Soc. 123 (1995), 905-908 Request permission

We give some necessary conditions for a closed manifold to admit a smooth map into an Euclidean space with only fold singular points.

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On singularities of folding type

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