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scientific article; zbMATH DE number 4188643 - MaRDI portal

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Publication:5753144

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zbMath0721.53005MaRDI QIDQ5753144

I. R. Porteous

Publication date: 1989

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

zbMATH Keywords

surface umbilics focal surfaces circles with higher order contact

Mathematics Subject Classification ID

Surfaces in Euclidean and related spaces (53A05) Theory of singularities and catastrophe theory (58K99) Differentiable maps on manifolds (58C25)

Related Items (1)

Umbilics and lines of curvature for shape interrogation

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