No label defined (Q4726964)
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scientific article; zbMATH DE number 4000883
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | No label defined |
scientific article; zbMATH DE number 4000883 |
Statements
1986
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surface
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flat normal connection
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curvature lines
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focal curves
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semi- umbilical
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