Wiktionary magic - google 'snark' and a whole new world opens up. Some
wonderful conjugations and declensions and adaptations, like
snarkerati. (though apparently snark's a combination of snide and remark)
But the one I loved on a math site was:
A snark is a bridgeless <http://mathworld.wolfram.com/GraphBridge.html>
cubic graph <http://mathworld.wolfram.com/CubicGraph.html> (i.e., a
biconnected cubic graph) with edge chromatic number
<http://mathworld.wolfram.com/EdgeChromaticNumber.html> of four. (By
Vizing's theorem <http://mathworld.wolfram.com/VizingsTheorem.html>, the
edge chromatic number
<http://mathworld.wolfram.com/EdgeChromaticNumber.html> of every cubic
graph <http://mathworld.wolfram.com/CubicGraph.html> is either three or
four, so a snark corresponds to the special case of four.) Snarks are
therefore class 2 graphs <http://mathworld.wolfram.com/Class2Graph.html>.
It was the maths that made me comment, sorry.
R
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