Elimination of definite fold

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13 Citations (Scopus)


We show that every continuous map of a smooth closed manifold of dimension n > 2 into the 2-sphere S2 or into the real projective plane ℝP2 is homotopic to a smooth excellent map (or a C stable map) without definite fold singular points. We also discuss the elimination of definite fold singular points for maps into other surfaces and into the circle S1.

Original languageEnglish
Pages (from-to)363-382
Number of pages20
JournalKyushu Journal of Mathematics
Issue number2
Publication statusPublished - 2006

All Science Journal Classification (ASJC) codes

  • General Mathematics


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