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Thursday, June 14, 2018

Wylie’s Bull

Filed under: Uncategorized — m759 @ 1:00 PM

"There is a structure theory for bull-free graphs
 
 modulo the structure of triangle-free graphs
  and their complements, which again is not easy.
  (The bull has a triangular face, with horns or
  pendant edges at two of its three vertices.)"

— Peter J. Cameron today

For example —

The bull graph in a book by Clarence R. Wylie, Jr.
(author of the poem "Paradox" (1948)). See no. 6 below —

See also Wikipedia.

Related material —

J. Paul Getty and Minotaur, according to Hollywood —

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