From local to global in quasiconformal structures.

  title={From local to global in quasiconformal structures.},
  author={Johannes Heinonen and Pekka Koskela},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={93 2},
We exhibit a large class of metric spaces whose infinitesimal quasiconformal structure is strong enough to capture the global quasiconformal structure. A sufficient condition for this to happen is described in terms of a Poincaré-type inequality. 
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