On the Poincaré inequality for vector fields
- Cite this article as:
- Lanconelli, E. & Morbidelli, D. Ark. Mat. (2000) 38: 327. doi:10.1007/BF02384323
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We prove the Poincaré inequality for vector fields on the balls of the control distance by integrating along subunit paths. Our method requires that the balls are representable by means of suitable “controllable almost exponential maps”.