A criterion for a ruled surface to be closed (Q2741732)
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scientific article; zbMATH DE number 1649450
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A criterion for a ruled surface to be closed |
scientific article; zbMATH DE number 1649450 |
Statements
20 September 2001
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A criterion for a ruled surface to be closed (English)
0 references
