On Tutte's extension of the four-colour problem (Q1157338)
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scientific article; zbMATH DE number 3737704
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | On Tutte's extension of the four-colour problem |
scientific article; zbMATH DE number 3737704 |
Statements
On Tutte's extension of the four-colour problem (English)
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1981
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k-flow
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Hadwiger's conjecture
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chain-group
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achromate
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