411 REFERENCE · Wiktionary
Grötzsch graph
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English
Etymology
Named after German mathematician Herbert Grötzsch.
Noun
en graph theory A triangle-free graph with 11 vertices, 20 edges, chromatic number 4, and crossing number 5. It is a member of an infinite sequence of triangle-free graphs, each the Mycielskian of the previous graph in the sequence.
en eponyms