Some new examples of non-degenerate quiver potentials

@article{Volcsey2010SomeNE,
  title={Some new examples of non-degenerate quiver potentials},
  author={Louis de Thanhoffer de Volcsey and Michel van den Bergh},
  journal={arXiv: Combinatorics},
  year={2010}
}
We prove a technical result which allows us to establish the non-degeneracy of potentials on quivers in some previously unknown or non-obvious cases. Our result applies to certain McKay quivers and also to potentials derived from geometric helices on Del Pezzo surfaces. 
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