# Multi-parameter Carnot-Carathéodory balls and the theorem of Frobenius

@article{Street2009MultiparameterCB,
title={Multi-parameter Carnot-Carath{\'e}odory balls and the theorem of Frobenius},
author={B. Street},
journal={Revista Matematica Iberoamericana},
year={2009},
volume={27},
pages={645-732}
}
• B. Street
• Published 2009
• Mathematics
• Revista Matematica Iberoamericana
• We study multi-parameter Carnot-Caratheodory balls, generalizing results due to Nagel, Stein, and Wainger in the single parameter setting. The main technical result is seen as a uniform version of the theorem of Frobenius. In addition, we study maximal functions associated to certain multi-parameter families of Carnot-Caratheodory balls.

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