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scientific article; zbMATH DE number 2112023 - MaRDI portal

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Publication:4823472

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zbMATH Open1064.58033MaRDI QIDQ4823472

Go-o Ishikawa

Publication date: 28 October 2004

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

cuspidal edge projective duality Grassmann duality bi-degenerate Legendre submanifold Ferus inequality open folded umbrella

Mathematics Subject Classification ID

Vector fields, frame fields in differential topology (57R25) Differential geometry of homogeneous manifolds (53C30) General geometric structures on manifolds (almost complex, almost product structures, etc.) (53C15) Contact manifolds (general theory) (53D10) Singularities of differentiable mappings in differential topology (57R45) Classification; finite determinacy of map germs (58K40) Hopf invariants (55Q25)

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