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Results tagged with co.combinatorics
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user 7886
Enumerative combinatorics, graph theory, order theory, posets, matroids, designs and other discrete structures. It also includes algebraic, analytic and probabilistic combinatorics.
6
votes
1
answer
1k
views
Spencer-Brown's claimed proof of the four color theorem [closed]
I read on Wikipedia that G. Spencer-Brown gave a non-computer based proof of the four color theorem. As I'm not an expert in the subject I'm unable to verify that claim. Does any one have an idea abou …
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