Every 5-coloured map in the plane contains a monochrome unit
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Publication:1151404
DOI10.1016/0097-3165(81)90046-7zbMath0458.05032OpenAlexW2022153739MaRDI QIDQ1151404
Publication date: 1981
Published in: Journal of Combinatorial Theory. Series A (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1016/0097-3165(81)90046-7
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