Lines tangent to four unit spheres with coplanar centres (Q5955141)
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scientific article; zbMATH DE number 1703260
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Lines tangent to four unit spheres with coplanar centres |
scientific article; zbMATH DE number 1703260 |
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Lines tangent to four unit spheres with coplanar centres (English)
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4 November 2003
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Given four unit spheres in \(\mathbb{R}^3\) with coplanar, but not collinear centers, the paper shows that there are at most eight lines tangent to all of them. This bound is tight.
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common tangent lines
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unit spheres
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spatial geometry
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coplanar centres
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