Convex sets and plane curve singularities (Q1116470)
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scientific article; zbMATH DE number 4090308
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Convex sets and plane curve singularities |
scientific article; zbMATH DE number 4090308 |
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Convex sets and plane curve singularities (English)
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1989
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According to a theorem of Möbius a differentiable Jordan curve in the real projective plane has at least 3 points of inflection if it is odd, i.e. meets any non-tangent line an odd number of times. Here it is shown that it has at least 6 points of inflection if it is even and unbounded.
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convex sets in projective planes
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theorem of Möbius
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differentiable Jordan curve
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points of inflection
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