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Results tagged with counterexamples
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user 159461
A counterexample is an example that disproves a mathematical conjecture or a purported theorem. For example, the Peterson graph is a counterexample to many seemingly plausible conjectures in Graph Theory.
14
votes
Counterexamples against all odds
(More of a comment than an answer, I suspect, but anyway…)
There are a bunch of results in graph theory that have to make exceptions for the Petersen graph, how do you rank that kind of counterexample …
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