The Engel-Lutz twist and overtwisted Engel structures

  title={The Engel-Lutz twist and overtwisted Engel structures},
  author={'Alvaro del Pino and T. Vogel},
  journal={arXiv: Symplectic Geometry},
We introduce a modification procedure for Engel structures that is reminiscent of the Lutz twist in 3-dimensional Contact Topology. This notion allows us to define what an Engel overtwisted disc is, and to prove a complete h-principle for overtwisted Engel structures with fixed overtwisted disc. 
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