Abstract:
We study some class of graph mappings on certain three-dimensional Lie groups, derive special differential properties of these mappings, and prove the area formula for graph surfaces.
Citation:
M. B. Karmanova, “Graph surfaces over three-dimensional Lie groups with sub-Riemannian structure”, Sibirsk. Mat. Zh., 56:6 (2015), 1351–1365; Siberian Math. J., 56:6 (2015), 1080–1092