Lie algebras and the Four Color Theorem

@article{BarNatan1997LieAA,
  title={Lie algebras and the Four Color Theorem},
  author={Dror Bar-Natan},
  journal={Combinatorica},
  year={1997},
  volume={17},
  pages={43-52}
}
We present a statement about Lie algebras that is equivalent to the Four Color Theorem. 
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