No label defined (Q4304330)
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scientific article; zbMATH DE number 637278
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | No label defined |
scientific article; zbMATH DE number 637278 |
Statements
28 July 1996
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four-color problem
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chromatic number
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non-bicolorable hypergraph
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edge-critical hypergraphs
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vertex-critical hypergraphs
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