Every planar map is four colorable. I: Discharging (Q1250223)
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scientific article; zbMATH DE number 3601602
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Every planar map is four colorable. I: Discharging |
scientific article; zbMATH DE number 3601602 |
Statements
Every planar map is four colorable. I: Discharging (English)
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1977
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