๐”– Bobbio Scriptorium
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Heawood's empire problem

โœ Scribed by Brad Jackson; Gerhard Ringel


Book ID
118382494
Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
545 KB
Volume
38
Category
Article
ISSN
0095-8956

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In his well-known paper of 1890 where he demolished Kempe's 'proof' for the four-colour theorem P.J. Heawood showed that the empires of every multimap (a map whose face set is partitioned into empires) can be coloured by 6r colours if r is the maximal number of faces belonging to some empire. He con

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