Approximate Differentiability of Mappings of Carnot-Carath\'eodory Spaces
Metric Geometry
2013-09-20 v3
Abstract
We study the approximate differentiability of measurable mappings of Carnot--Carath\'eodory spaces. We show that the approximate differentiability almost everywhere is equivalent to the approximate differentiability along the basic horizontal vector fields almost everywhere. As a geometric tool we prove the generalization of Rashevsky--Chow theorem for -smooth vector fields. The main result of the paper extends theorems on approximate differentiability proved by Stepanoff (1923, 1925) and Whitney (1951) in Euclidean spaces and by Vodopyanov (2000) on Carnot groups.
Keywords
Cite
@article{arxiv.1206.5197,
title = {Approximate Differentiability of Mappings of Carnot-Carath\'eodory Spaces},
author = {Sergey Basalaev and Sergey Vodopyanov},
journal= {arXiv preprint arXiv:1206.5197},
year = {2013}
}