On the Spherical Hausdorff Measure in Step 2 Corank 2 sub-Riemannian Geometry

الأصل · EN

In this paper, we consider generic corank 2 sub-Riemannian structures, and we show that the Spherical Hausdorf measure is always a C¹-smooth volume, which is in fact generically C²- smooth out of a stratified subset of codimension 7. In particular, for rank 4, it is generically C². This is the continuation of a previous work by the auhors.