Proof of a conjecture of Dirac concerning 4-critical planar graphs (Q1336675)
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scientific article; zbMATH DE number 681678
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Proof of a conjecture of Dirac concerning 4-critical planar graphs |
scientific article; zbMATH DE number 681678 |
Statements
Proof of a conjecture of Dirac concerning 4-critical planar graphs (English)
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3 November 1994
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It is shown that every 4-critical planar graph has a vertex of degree at most 4.
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conjecture of Dirac
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4-critical planar graph
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