Intersection graphs of Helly families of subtrees (Q1917300)
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scientific article; zbMATH DE number 897402
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Intersection graphs of Helly families of subtrees |
scientific article; zbMATH DE number 897402 |
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Intersection graphs of Helly families of subtrees (English)
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7 July 1996
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A Helly family of a graph \(H\) is a family of subtrees of \(H\) such that every subfamily of mutually intersecting subtrees has a nonempty intersection. The author shows that every graph is an intersection graph of a Helly family of subtrees of a graph without triangles.
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Helly family
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subtrees
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intersection graph
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