On the colouring of maps. (Q1551664)
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scientific article; zbMATH DE number 2708355
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | On the colouring of maps. |
scientific article; zbMATH DE number 2708355 |
Statements
On the colouring of maps. (English)
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1880
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Bezieht sich auf De Morgan's durch Erfahrung gefundenen Satz, dass vier Farben hinreichend sind, um auf einer Karte die verschiedenen Districte alle von einander zu unterscheiden.
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distinction on maps by four colours
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